Quantitative Aptitude Practice Question and Answer

Q: 30 Men can complete a work in 25 days. In how many days can 75 men complete it? 4637 2

  • 1
    15
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    16
    Correct
    Wrong
  • 4
    10
    Correct
    Wrong
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Answer : 4. "10"

Q: A single person takes 4 minutes to type a page, if from 12 noon to 1.00 pm., 1080 pages are to be typed, how many persons should be employed on this job? 4622 0

  • 1
    108
    Correct
    Wrong
  • 2
    60
    Correct
    Wrong
  • 3
    90
    Correct
    Wrong
  • 4
    72
    Correct
    Wrong
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Answer : 4. "72"

Q: Two trains namely X & Y leave station 'A' at 6.30am and 7.40am and travel at 30km/hr and 40 km/hr respectively. How many kms from 'A' will the trains meet ? 4574 0

  • 1
    140 kms
    Correct
    Wrong
  • 2
    120 kms
    Correct
    Wrong
  • 3
    96 kms
    Correct
    Wrong
  • 4
    142 kms
    Correct
    Wrong
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Answer : 1. "140 kms"
Explanation :

Answer: A) 140 kms Explanation: It is given train X leave station A at 6:30 am, here it is asked to calculate the distance from A when the trains meet, theDistance traveled by train left at 6:30 am upto 7:40 am i.e. in 1 hr. 10 min. or 7/6 hours = 30 x 7/6 = 35 kmSo train leaving at 7:40 am will meet first train after covering a distance of 35 km. with relative speed of 40-30=10 km/hr.Hence time taken = 35/10 = 3.5 hours or 3 hours 30 minutesSo distance from A = Distance traveled by 2nd train in 3 hr. 30 min = 40 x 3.5 = 140 km.

Q: Find out the wrong number in the following series: 5, 15, 30, 80, 180, 540, 1080 4538 0

  • 1
    540
    Correct
    Wrong
  • 2
    180
    Correct
    Wrong
  • 3
    30
    Correct
    Wrong
  • 4
    80
    Correct
    Wrong
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Answer : 4. "80"
Explanation :

Answer: D) 80 Explanation: There should be 90 instead of 80so we can have a series5, 5x3, 15x2, 30x3, 90x2, 180x3, 540x2 and 1080x3 and so on...

Q: Find the Odd One Out of the following Number Series? 3, 14, 36, 67, 113, 168 4533 0

  • 1
    14
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    67
    Correct
    Wrong
  • 4
    113
    Correct
    Wrong
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Answer : 3. "67"
Explanation :

Answer: C) 67 Explanation: Here the given number series is 3, 14, 36, 67, 113, 168 It follows a pattern that 3 3 + 1 x 11 = 3 + 11 = 14 14 + 2 x 11 = 14 + 22 = 36 36 + 3 x 11 = 36 + 33 = 69 69 + 4 x 11 = 69 + 44 = 113 113 + 5 x 11 = 113 + 55 = 168   Hence, the wrong number is 67.

Q: Find the next number in the series 141,137,146,130,155,119,... 4510 0

  • 1
    147
    Correct
    Wrong
  • 2
    168
    Correct
    Wrong
  • 3
    162
    Correct
    Wrong
  • 4
    182
    Correct
    Wrong
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Answer : 2. "168"
Explanation :

Answer: B) 168 Explanation: The pattern is -4, +9,-16, +25, -36 The next number=119+49=168

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Answer : 2. "6 mile/hr"
Explanation :

Answer: B) 6 mile/hr Explanation: Let the speed of river and boat be 'r' m/min and 'b' m/min.so relative speed in upstream (b-r)m/min and in downstream (b+r)m/min.Now in upstream distnce covered in 5 min is 5(b-r)milesso total distnce covered => 1 + 5(b-r)miles in upstreamIn downstream distance covered in 5min is 5(b+r)miles Now 1 + 5(b-r) = 5(b+r)1+5b-5r = 5b+5r1 = 10rr = 1/10 mile/min => 6 mile/hr.

Q: When I was married 10 years ago my wife is the 6th member of the family. Today my father died and a baby born to me.The average age of my family during my marriage is same as today. What is the age of Father when he died ? 4454 0

  • 1
    50 yrs
    Correct
    Wrong
  • 2
    60 yrs
    Correct
    Wrong
  • 3
    70 yrs
    Correct
    Wrong
  • 4
    65 yrs
    Correct
    Wrong
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Answer : 2. "60 yrs"
Explanation :

Answer: B) 60 yrs Explanation: Let the Father be x years when he died Average Age 10 years ago be A Total Age 10 years ago = 6*A Total Age after 10 years(Just before father's Death) = 6A + 6*10 = 6A + 60 Father Died and Baby was born => the Total number of people in the family is Same (6) Baby born today so age of baby = 0 (6A +60 - x)/6 = 6A/6 => A + 10 -(x/6) = A => x/6 = 10 => x = 60 Therefore we can conclude that the father was 60 years old when he died.

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