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प्र: A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings ? 3199 0

उत्तर : 4. "37"
व्याख्या :
Answer: D) 37 Explanation: 16x + 85 = 17(x + 3) x = 34 + 3 = 37

प्र: A and B began business with Rs.3000 and Rs.4000 after 8 months, A withdraws Rs.1000 and B advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of A ? 9969 0

उत्तर : 1. "Rs. 240"
व्याख्या :
Answer: A) Rs. 240 Explanation: The ratio of A & B investments = (3x8 + 2x4):(4x8 + 5x4) => 8:13 => 8/21 x 630 = 240.

प्र: The least number of four digits which is divisible by 4, 6, 8 and 10 is ? 1888 0

उत्तर : 2. "1080"
व्याख्या :
Answer: B) 1080 Explanation: LCM of 4, 6, 8 and 10 = 120120) 1000 (8 960 ------ 40 The least number of four digits which is divisible by 4, 6, 8 and 10 => 1000 + 120 - 40 = 1080.

प्र: Rs.1500 is divided into two parts such that if one part is invested at 6% and the other at 5% the whole annual interest from both the sum is Rs.85. How much was lent at 5% ? 3534 0

उत्तर : 1. "Rs. 500"
व्याख्या :
Answer: A) Rs. 500 Explanation: (kx5x1)/100 + [(1500 - k)x6x1]/100 = 85 5k/100 + 90 – 6k/100 = 85 k/100 = 5 => k = 500

प्र: A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ? 4138 0

उत्तर : 4. "2 hrs"
व्याख्या :
Answer: D) 2 hrs Explanation: Speed in downstream = 96/8 = 12 kmph Speed of current = 4 km/hr Speed of the boatman in still water = 12 – 4 = 8 kmph Speed in upstream = 8 – 4 = 4 kmph Time taken to cover 8 km upstream = 8/4 = 2 hours.

प्र: The third proportional to 9 and 12 is ? 1920 0

उत्तर : 2. "16"
व्याख्या :
Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

प्र: A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ? 3176 0

उत्तर : 4. "10 : 23 : 20 PM"
व्याख्या :
Answer: D) 10 : 23 : 20 PM Explanation: The watch gains 5 seconds in 3 minutes = 100 seconds in 1 hour. From 8 AM to 10 PM on the same day, time passed is 14 hours. In 14 hours, the watch would have gained 1400 seconds or 23 minutes 20 seconds. So, when the correct time is 10 PM, the watch would show 10 : 23 : 20 PM

प्र: Two pipes A and B can separately fill a cistern in 60 min and 75 min respectively. There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50 min. In how much time, the third pipe alone can empty the cistern ? 1423 0

उत्तर : 4. "100 min"
व्याख्या :
Answer: D) 100 min Explanation: Work done by the third pipe in 1 min = 1/50 - (1/60 + 1/75) = - 1/100.[-ve sign means emptying] The third pipe alone can empty the cistern in 100 min.

प्र: A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings ? 3199 0

उत्तर : 4. "37"
व्याख्या :
Answer: D) 37 Explanation: 16x + 85 = 17(x + 3) x = 34 + 3 = 37

प्र: A and B began business with Rs.3000 and Rs.4000 after 8 months, A withdraws Rs.1000 and B advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of A ? 9969 0

उत्तर : 1. "Rs. 240"
व्याख्या :
Answer: A) Rs. 240 Explanation: The ratio of A & B investments = (3x8 + 2x4):(4x8 + 5x4) => 8:13 => 8/21 x 630 = 240.

प्र: The least number of four digits which is divisible by 4, 6, 8 and 10 is ? 1888 0

उत्तर : 2. "1080"
व्याख्या :
Answer: B) 1080 Explanation: LCM of 4, 6, 8 and 10 = 120120) 1000 (8 960 ------ 40 The least number of four digits which is divisible by 4, 6, 8 and 10 => 1000 + 120 - 40 = 1080.

प्र: Rs.1500 is divided into two parts such that if one part is invested at 6% and the other at 5% the whole annual interest from both the sum is Rs.85. How much was lent at 5% ? 3534 0

उत्तर : 1. "Rs. 500"
व्याख्या :
Answer: A) Rs. 500 Explanation: (kx5x1)/100 + [(1500 - k)x6x1]/100 = 85 5k/100 + 90 – 6k/100 = 85 k/100 = 5 => k = 500

प्र: A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ? 4138 0

उत्तर : 4. "2 hrs"
व्याख्या :
Answer: D) 2 hrs Explanation: Speed in downstream = 96/8 = 12 kmph Speed of current = 4 km/hr Speed of the boatman in still water = 12 – 4 = 8 kmph Speed in upstream = 8 – 4 = 4 kmph Time taken to cover 8 km upstream = 8/4 = 2 hours.

प्र: The third proportional to 9 and 12 is ? 1920 0

उत्तर : 2. "16"
व्याख्या :
Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

प्र: A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ? 3176 0

उत्तर : 4. "100 min"
व्याख्या :
Answer: D) 100 min Explanation: Work done by the third pipe in 1 min = 1/50 - (1/60 + 1/75) = - 1/100.[-ve sign means emptying] The third pipe alone can empty the cistern in 100 min.

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प्र: A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings ? 3199 05b5cc6e9e4d2b4197774ee01

उत्तर : 4. "37" व्याख्या :Answer: D) 37 Explanation: 16x + 85 = 17(x + 3) x = 34 + 3 = 37

प्र: A and B began business with Rs.3000 and Rs.4000 after 8 months, A withdraws Rs.1000 and B advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of A ? 9969 05b5cc6e9e4d2b4197774edfc

उत्तर : 1. "Rs. 240" व्याख्या :Answer: A) Rs. 240 Explanation: The ratio of A & B investments = (3x8 + 2x4):(4x8 + 5x4) => 8:13 => 8/21 x 630 = 240.

प्र: The least number of four digits which is divisible by 4, 6, 8 and 10 is ? 1888 05b5cc6e9e4d2b4197774edf7

उत्तर : 2. "1080" व्याख्या :Answer: B) 1080 Explanation: LCM of 4, 6, 8 and 10 = 120120) 1000 (8 960 ------ 40 The least number of four digits which is divisible by 4, 6, 8 and 10 => 1000 + 120 - 40 = 1080.

प्र: Rs.1500 is divided into two parts such that if one part is invested at 6% and the other at 5% the whole annual interest from both the sum is Rs.85. How much was lent at 5% ? 3534 05b5cc6e9e4d2b4197774eded

उत्तर : 1. "Rs. 500" व्याख्या :Answer: A) Rs. 500 Explanation: (kx5x1)/100 + [(1500 - k)x6x1]/100 = 85 5k/100 + 90 – 6k/100 = 85 k/100 = 5 => k = 500

प्र: A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ? 4138 05b5cc6e9e4d2b4197774ede3

उत्तर : 4. "2 hrs" व्याख्या :Answer: D) 2 hrs Explanation: Speed in downstream = 96/8 = 12 kmph Speed of current = 4 km/hr Speed of the boatman in still water = 12 – 4 = 8 kmph Speed in upstream = 8 – 4 = 4 kmph Time taken to cover 8 km upstream = 8/4 = 2 hours.

प्र: The third proportional to 9 and 12 is ? 1920 05b5cc6e9e4d2b4197774ede8

उत्तर : 2. "16" व्याख्या :Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

प्र: A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ? 3176 05b5cc6e7e4d2b4197774edd4

उत्तर : 4. "100 min" व्याख्या :Answer: D) 100 min Explanation: Work done by the third pipe in 1 min = 1/50 - (1/60 + 1/75) = - 1/100.[-ve sign means emptying] The third pipe alone can empty the cistern in 100 min.

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

प्र: A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings ? 3199 0

उत्तर : 4. "37"
व्याख्या :
Answer: D) 37 Explanation: 16x + 85 = 17(x + 3) x = 34 + 3 = 37

प्र: A and B began business with Rs.3000 and Rs.4000 after 8 months, A withdraws Rs.1000 and B advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of A ? 9969 0

उत्तर : 1. "Rs. 240"
व्याख्या :
Answer: A) Rs. 240 Explanation: The ratio of A & B investments = (3x8 + 2x4):(4x8 + 5x4) => 8:13 => 8/21 x 630 = 240.

प्र: The least number of four digits which is divisible by 4, 6, 8 and 10 is ? 1888 0

उत्तर : 2. "1080"
व्याख्या :
Answer: B) 1080 Explanation: LCM of 4, 6, 8 and 10 = 120120) 1000 (8 960 ------ 40 The least number of four digits which is divisible by 4, 6, 8 and 10 => 1000 + 120 - 40 = 1080.

प्र: Rs.1500 is divided into two parts such that if one part is invested at 6% and the other at 5% the whole annual interest from both the sum is Rs.85. How much was lent at 5% ? 3534 0

उत्तर : 1. "Rs. 500"
व्याख्या :
Answer: A) Rs. 500 Explanation: (kx5x1)/100 + [(1500 - k)x6x1]/100 = 85 5k/100 + 90 – 6k/100 = 85 k/100 = 5 => k = 500

प्र: A boatman can row 96 km downstream in 8 hr. If the speed of the current is 4 km/hr, then find in what time he will be able to cover 8 km upstream ? 4138 0

उत्तर : 4. "2 hrs"
व्याख्या :
Answer: D) 2 hrs Explanation: Speed in downstream = 96/8 = 12 kmph Speed of current = 4 km/hr Speed of the boatman in still water = 12 – 4 = 8 kmph Speed in upstream = 8 – 4 = 4 kmph Time taken to cover 8 km upstream = 8/4 = 2 hours.

प्र: The third proportional to 9 and 12 is ? 1920 0

उत्तर : 2. "16"
व्याख्या :
Answer: B) 16 Explanation: Let the third proportion to 9 & 12 be 'x'. => 9:12 = 12 :p => p = 12x12/9 = 16.

प्र: A watch gains 5 seconds in 3 minutes and was set right at 8 AM. What time will it show at 10 PM on the same day ? 3176 0

उत्तर : 4. "100 min"
व्याख्या :
Answer: D) 100 min Explanation: Work done by the third pipe in 1 min = 1/50 - (1/60 + 1/75) = - 1/100.[-ve sign means emptying] The third pipe alone can empty the cistern in 100 min.