Quantitative Aptitude Practice Question and Answer

Q: 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 ? 4360 0

  • 1
    1.5 hrs
    Correct
    Wrong
  • 2
    1 hrs
    Correct
    Wrong
  • 3
    2.5 hrs
    Correct
    Wrong
  • 4
    2 hrs
    Correct
    Wrong
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Answer : 4. "2 hrs"
Explanation :

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 тАУ 4 = 8 kmph Speed in upstream = 8 тАУ 4 = 4 kmph Time taken to cover 8 km upstream = 8/4 = 2 hours.

Q: In how many years, Rs. 200 will produce the same interest @ 5 % as Rs. 900 produce in 2 years @ 3 ┬╜ % ┬а? 4347 0

  • 1
    5.2 yrs
    Correct
    Wrong
  • 2
    7 yrs
    Correct
    Wrong
  • 3
    7.9 yrs
    Correct
    Wrong
  • 4
    6.3 yrs
    Correct
    Wrong
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Answer : 4. "6.3 yrs"
Explanation :

Answer: D) 6.3 yrs Explanation: P = Rs. 900, R = 3 ┬╜ % = 7/2 %, T = 2 years.┬а Therefore,┬а 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.

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Answer : 4. "20 years"
Explanation :

Answer: D) 20 years Explanation: Present total age of the members = 26(5) = 130 years. ┬а Present age of the youngest member = 10 years ┬а Present total age of the remaining four members = 130 -10 = 120 years ┬а Their average age at the time of the birth of the youngest member = 120-4├Ч104┬а= 30 - 10 = 20 years.

Q:

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4308 2

  • 1
    3:17
    Correct
    Wrong
  • 2
    4:15
    Correct
    Wrong
  • 3
    2:15
    Correct
    Wrong
  • 4
    2:13
    Correct
    Wrong
  • 5
    рдЗрдирдореЗрдВ рд╕реЗ рдХреЛрдИ рдирд╣реАрдВ
    Correct
    Wrong
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Answer : 3. "2:15"

Q: In a mens hostel, there were 95 students. To accommodate 30 more students the average is decreased by rupees 5. But total expenditure increased by Rs.500. Find the total expenditure of the hostel now ? 4302 0

  • 1
    Rs. 4680
    Correct
    Wrong
  • 2
    Rs. 4420
    Correct
    Wrong
  • 3
    Rs. 4960
    Correct
    Wrong
  • 4
    Rs. 5480
    Correct
    Wrong
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Answer : 1. "Rs. 4680"
Explanation :

Answer: A) Rs. 4680 Explanation: Let the expenditure on the 95 students be 'x' Then, 95x + 500 = 120(x тАУ 5)95x + 500 = 120x - 600120x - 95x = 110025x = 1100=> x = 44 Therefore, total expenditure of the hostel becomes95 x 44 + 500 = 4680.

Q: By selling an article at Rs.800, a shopkeeper makes a profit of 25%.At what price should he sell the article so as to make a loss of 25%? 4278 0

  • 1
    Rs.720
    Correct
    Wrong
  • 2
    Rs.640
    Correct
    Wrong
  • 3
    Rs.540
    Correct
    Wrong
  • 4
    Rs.480
    Correct
    Wrong
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Answer : 4. "Rs.480"
Explanation :

Answer: D) Rs.480 Explanation: SP = Rs.800 ; Profit = 25% ┬аCP┬а=┬аSP┬аx┬а100100+P%┬а=┬а800┬аx┬а100100+25┬а=┬а640 ┬а ┬аNow, CP = Rs.640 ┬а Loss = 25% = 25% of Rs.640 = Rs.160 ┬а Thus, SP = CP - Loss = Rs.640 - Rs.160 = Rs.480

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