Quantitative Aptitude Practice Question and Answer

Q: The difference between the time taken by two trains to travel a distance of 350 km is 2 hours 20 minutes. If the difference between their speeds is 5 km/hr, what is the speed of faster train ? 2745 0

  • 1
    36 kmph
    Correct
    Wrong
  • 2
    30 kmph
    Correct
    Wrong
  • 3
    34 kmph
    Correct
    Wrong
  • 4
    40 kmph
    Correct
    Wrong
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Answer : 2. "30 kmph"
Explanation :

Answer: B) 30 kmph Explanation: Let the speed of the faster train be 'S' kmph ┬а Then speed of the slower train will be '(S-5)' kmph ┬а Time taken by faster train = 350/S hrs ┬а Time taken by slower train = 350/(S-5) hrs ┬а350s-5┬а-┬а350s┬а=┬а2┬аhrs┬а20┬аmin┬а=┬а213┬а=┬а73 ┬а => S = 30 km/hr.

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Answer : 1. "4/3 days"
Explanation :

Answer: A) 4/3 days Explanation: Let the total number of documents to be printed be 12. ┬аThe number of documents printed by P in 1 day = 4. ┬аThe number of documents printed by Q in 1 day = 3. ┬аThe number of documents printed by R in 1 day = 2. ┬аThus, the total number of documents that can be printed by all the machines working simultaneously in a single day = 9. ┬а Therefore, the number of days taken to complete the whole work = 12/9 = 4/3 days.

Q: In how many ways the letters of the word NUMERICAL can be arranged so that the consonants always occupy the even places ? 2740 0

  • 1
    5!
    Correct
    Wrong
  • 2
    6!
    Correct
    Wrong
  • 3
    4!
    Correct
    Wrong
  • 4
    Can't determine
    Correct
    Wrong
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Answer : 4. "Can't determine"
Explanation :

Answer: D) Can't determine Explanation: NUMERICAL has 9 positions in which 2, 4, 6, 8 are even positions. And it contains 5 consonents i.e, N, M, R, C & L. Hence this cannot be done as 5 letters cannot be placed in 4 positions. Therefore, Can't be determined.

Q: The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday ? 2739 0

  • 1
    34
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    38
    Correct
    Wrong
  • 4
    40
    Correct
    Wrong
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Answer : 1. "34"
Explanation :

Answer: A) 34 Explanation: M + Tu + W + Th = 4 x 48 = 192Tu + W + Th + F = 4 x 46 = 184M = 42Tu + W + Th = 192 - 42 = 150F = 184 тАУ 150 = 34

Q: There are 600 Kabaddi players 4% wear knee band on one leg. Of the remaining, 25% wear knee bands on both legs. How many players don't wear a knee band ? 2734 0

  • 1
    426
    Correct
    Wrong
  • 2
    428
    Correct
    Wrong
  • 3
    415
    Correct
    Wrong
  • 4
    432
    Correct
    Wrong
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Answer : 4. "432"
Explanation :

Answer: D) 432 Explanation: There are 600 Kabaddi players4% wear knee band on one legRemaining players = 600 x 0.96 = 576Of the remaining, 25% wear knee bands on both leg and Of the remaining, 75% do not wear knee bands .So players not wearing knee bands = 0.75 x 576 = 576 x 3/4 = 144 x 3 = 432.

Q: Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the┬аtank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank? 2732 0

  • 1
    70 lit
    Correct
    Wrong
  • 2
    170 lit
    Correct
    Wrong
  • 3
    90 lit
    Correct
    Wrong
  • 4
    190 lit
    Correct
    Wrong
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Answer : 2. "170 lit"
Explanation :

Answer: B) 170 lit Explanation: Given A alone can fill the tank of capacity 240 lit in 16 hrs. => A can fill in 1 hr = 240/16 = 15 lit => B alone can fill the tank of capacity 240 lit in 12 hrs. => B can fill in 1 hr = 240/12 = 20 lit Now, (A + B) in 1 hr = 15 + 20 = 35 lit But they are opened for 2 hrs => 2 x 35 = 70 lit rae filled Remaining water to be filled in tank of 240 lit = 240 - 70 = 170 lit.

Q: A motorboat goes 8 km an hour in still water, but takes thrice as much time in going the same distance against the current than going with the current. Then find the speed of the current? 2731 0

  • 1
    4 kmph
    Correct
    Wrong
  • 2
    6 kmph
    Correct
    Wrong
  • 3
    3 kmph
    Correct
    Wrong
  • 4
    2 kmph
    Correct
    Wrong
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Answer : 1. "4 kmph"
Explanation :

Answer: A) 4 kmph Explanation: Let the speed of current = 'C' km/hr ┬а Given the speed of boat in still water = 6 kmph ┬а Let 'd' kms be the distance it covers. ┬а According to the given data, ┬а Boat takes thrice as much time in going the same distance against the current than going with the current ┬а i.e,┬аd8┬а-┬аC┬а=┬а3┬а├Ч┬аd8┬а+┬аC ┬а тЗТ┬а24┬а-┬а3C┬а=┬а8┬а+┬аCтЗТ┬а4C┬а=┬а16тЗТ┬аC┬а=┬а4┬аkmph ┬а Hence, the speed of the current C = 4 kmph.

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