Quantitative Aptitude Practice Question and Answer
8Q: When 0.46 is written in simplest form, the sum of the numerator and the denominator is ┬а? 1720 05b5cc6dee4d2b4197774ea9e
5b5cc6dee4d2b4197774ea9e- 169false
- 273true
- 396false
- 441false
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Answer : 2. "73"
Explanation :
Answer: B) 73 Explanation: 0.46 = 46/100 = 23/50. Sum of the numerator and denominator is 23 + 50 = 73
Q: 250 рдореАрдЯрд░ рд▓рдореНрдмреА рдПрдХ рдЯреНрд░реЗрди рдПрдХ рдЦрдореНрднреЗ рдХреЛ 15 рд╕реИрдВрдХрдгреНрдб рдореЗрдВ рдкрд╛рд░ рдХрд░рддреА рд╣реИред рдЯреНрд░реЗрди рдХреА рдЧрддрд┐ рдХрд┐рдореА/рдШрдВрдЯрд╛ рдореЗрдВ рдХреНрдпрд╛ рд╣реИ? 1718 05d15fcbb5fdb2c68495d9dff
5d15fcbb5fdb2c68495d9dff- 190false
- 245false
- 370false
- 4рдЗрдирдореЗрдВ рд╕реЗ рдХреЛрдИ рдирд╣реАрдВtrue
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Answer : 4. "рдЗрдирдореЗрдВ рд╕реЗ рдХреЛрдИ рдирд╣реАрдВ"
Q: A motorboat can go 10 miles downstream on a river in 20 min. It takes 30 min for this boat to go back at the same 10 miles. Find the speed of the current ? 1718 05b5cc6bfe4d2b4197774da29
5b5cc6bfe4d2b4197774da29- 18 m/hfalse
- 25 m/htrue
- 37 m/hfalse
- 46 m/hfalse
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Answer : 2. "5 m/h"
Explanation :
Answer: B) 5 m/h Explanation: As the distance travelled is constant, the time taken is inversely proportional to speed. Let 'u' be the speed of the current and 'v' be the speed of the boat. Speed of the boat downstream = v + u & upstream = v - u => v+u/v-u = 30/20 => v/u = 5 => v = 5u => v + u = 6u = 10/20/60 miles/hr => 6u = 30 m/h => u = 5 m/h
Q: The top and bottom of a tower were seen to be at angles of depression 30┬░ and 60┬░ from the top of a hill of height 100 m. Find the height of the tower ? 1718 15b5cc72ce4d2b4197774f79c
5b5cc72ce4d2b4197774f79c- 142.2 mtsfalse
- 233.45 mtsfalse
- 366.6 mtstrue
- 458.78 mtsfalse
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Answer : 3. "66.6 mts"
Explanation :
Answer: C) 66.6 mts Explanation: From above diagramAC represents the hill and DE represents the tower Given that AC = 100 m angleXAD = angleADB = 30┬░ (тИ╡ AX || BD ) angleXAE = angleAEC = 60┬░ (тИ╡ AX || CE) Let DE = h Then, BC = DE = h, AB = (100-h) (тИ╡ AC=100 and BC = h), BD = CE tan 60┬░=AC/CE => тИЪ3 = 100/CE =>CE = 100/тИЪ3 ----- (1) tan 30┬░ = AB/BD => 1/тИЪ3 = 100тИТh/BD => BD = 100тИТh(тИЪ3)тИ╡ BD = CE and Substitute the value of CE from equation 1 100/тИЪ3 = 100тИТh(тИЪ3) => h = 66.66 mts The height of the tower = 66.66 mts.
Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 1716 05b5cc75ce4d2b4197774fc48
5b5cc75ce4d2b4197774fc48- 124%false
- 229%false
- 334%false
- 425%true
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Answer : 4. "25%"
Explanation :
Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100┬а% of second number = 7/28 x 100% of second number = 25% of second number.
Q: A and B started a business investing the money in ratio 4:6, after 6 months B withdraw his investment and C joins him with twice the amount of B. At the end of the year total profit is Rs.3315. Find share of C ? 1713 05b5cc6c5e4d2b4197774ddd7
5b5cc6c5e4d2b4197774ddd7- 1Rs. 450false
- 2Rs. 1020false
- 3Rs. 765false
- 4Rs. 1530true
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Answer : 4. "Rs. 1530"
Explanation :
Answer: D) Rs. 1530 Explanation: Ratio of investments of A, B & C => Share of C = 1530 Share of B = 765 Share of A = 1020
Q: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 1713 05b5cc6d6e4d2b4197774e665
5b5cc6d6e4d2b4197774e665- 12 yrstrue
- 24 yrsfalse
- 33 yrsfalse
- 45 yrsfalse
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Answer : 1. "2 yrs"
Explanation :
Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60┬а ┬а ┬а ┬а ┬а-----------┬а ┬а ┬а ┬а ┬а ┬а ┬а ┬а2 years Therefore, the age of child is 2 years.
Q: Rajitha's present age is three years less than twice her age 12 years ago. Also, the ratio of Raj's present age to Rajitha's present age is 4:9. What will be Raj's age after 5 years ? 1712 05b5cc736e4d2b4197774f82d
5b5cc736e4d2b4197774f82d- 117 yrstrue
- 216 yrsfalse
- 319 yrsfalse
- 421 yrsfalse
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Answer : 1. "17 yrs"
Explanation :
Answer: A) 17 yrs Explanation: Let the present age of Raj and Rajitha be 4x and 9x.Then, according to question,9x = 2(9x-12)-3 => 9x = 27 => x = 3Raj's present age = 4x = 12yrs, After 5 years Raj's age will be 12 + 5 = 17 yrs.