GATE प्रश्न और उत्तर का अभ्यास करें

प्र: In one hour, a boat goes 12 km/hr along the stream and 6 km/hr against the stream. The speed of the boat in still water (in km/hr) is: 4210 0

  • 1
    9
    सही
    गलत
  • 2
    8
    सही
    गलत
  • 3
    7
    सही
    गलत
  • 4
    7.5
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 1. "9"
व्याख्या :

Answer: A) 9 Explanation: Speed in still water = Average of Speed in Upstream and speed in Downstream = 1/2 (12 + 6) kmph = 9 kmph.

प्र: Solve the equation 122x+1 = 1 ? 4185 0

  • 1
    -1/2
    सही
    गलत
  • 2
    1/2
    सही
    गलत
  • 3
    1
    सही
    गलत
  • 4
    -1
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 1. "-1/2"
व्याख्या :

Answer: A) -1/2 Explanation: Rewrite equation as 122x+1 = 120   Leads to 2x + 1 = 0    Solve for x : x = -1/2

प्र: The marked price of an article is increased by 25% and the selling price is increased by 16.66%, then the amount of profit doubles. If the original marked price be Rs. 400 which is greater than the corresponding cost price by 33.33%, what is the increased selling price? 4173 0

  • 1
    Rs. 380
    सही
    गलत
  • 2
    Rs. 420
    सही
    गलत
  • 3
    Rs. 460
    सही
    गलत
  • 4
    Rs. 440
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 2. "Rs. 420"
व्याख्या :

Answer: B) Rs. 420 Explanation: As given in the question, Marked price is 25% more than the Cost price. => C.P of the article = 34 x 400 = 300  Now,  Let the original S.P of the article be Rs. P Now the new S.P = P + 16.666 +13.333300 x P  => S.P = 7P6 According to the question, 7P6 - 300 = 2P - 300 => 5P = 1800 => P = Rs. 360 Hence, the increased S.P = 360 x 7/6 = Rs. 420.

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 ? 4136 0

  • 1
    1.5 hrs
    सही
    गलत
  • 2
    1 hrs
    सही
    गलत
  • 3
    2.5 hrs
    सही
    गलत
  • 4
    2 hrs
    सही
    गलत
  • उत्तर देखें
  • Workspace

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: In how many years, Rs. 200 will produce the same interest @ 5 % as Rs. 900 produce in 2 years @ 3 ½ %  ? 4128 0

  • 1
    5.2 yrs
    सही
    गलत
  • 2
    7 yrs
    सही
    गलत
  • 3
    7.9 yrs
    सही
    गलत
  • 4
    6.3 yrs
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 4. "6.3 yrs"
व्याख्या :

Answer: D) 6.3 yrs Explanation: P = Rs. 900, R = 3 ½ % = 7/2 %, T = 2 years.  Therefore,  S.I. = PTR/100 S.I. = Rs. (900 x 7/2 x 2/100) = Rs. 63 Now, P = Rs. 200, S.I. = Rs. 63, R = 5 % Time = ((100 x 63) / (200 x 5) ) years = 6.3 years.

प्र: The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs. 5000 ? 4107 0

  • 1
    Rs. 5500
    सही
    गलत
  • 2
    Rs. 6000
    सही
    गलत
  • 3
    Rs. 6200
    सही
    गलत
  • 4
    Rs. 6350
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 2. "Rs. 6000"
व्याख्या :

Answer: B) Rs. 6000 Explanation: The wages of labourers in a factory increases in the ratio 22:25 and there was a reduction in the number of labourers in the ratio 15:11. Find the original wage bill if the present bill is Rs 5000 ?Ratio of increase of wages = 22:25Ratio of decrease of labourers = 15:11Compound ratio of wages of labourers = 22 x 15 : 25 x 11 = 330:275Final bill = Rs. 5000For 275 ratio wages = Rs. 5000For 1 ratio wages = 5000/275For 330 ratio wages = 5000/275 x 330 = Rs. 6000

प्र: Which of the Phrases(1), (2), (3) and (4) given below each sentence should replace the phrases printed in bold in the sentence to make it grammatically correct. The ban is applied by the district’s commercial taxes department after protests by a community, which had threat to burn theatres screening the controversial movie. 4106 0

  • 1
    had threated to burn
    सही
    गलत
  • 2
    had threatened to burn
    सही
    गलत
  • 3
    had threatened to burning
    सही
    गलत
  • 4
    had threats of burning
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 2. "had threatened to burn"
व्याख्या :

Answer: B) had threatened to burn Explanation:

प्र: Essential Part for the given word from the following options. Respiration 4099 0

  • 1
    Oxygen
    सही
    गलत
  • 2
    Carbon monoxide
    सही
    गलत
  • 3
    Mouth
    सही
    गलत
  • 4
    Circulation
    सही
    गलत
  • उत्तर देखें
  • Workspace

उत्तर : 1. "Oxygen"
व्याख्या :

Answer: A) Oxygen Explanation: A person or animal must take in oxygen for respiration to occur. A mouth (choice a) is not essential because breathing can occur through the nose. Choices b and d are clearly not essential and can be ruled out.

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई

  त्रुटि की रिपोर्ट करें

कृपया संदेश दर्ज करें
त्रुटि रिपोर्ट सफलतापूर्वक जमा हुई