Quantitative Aptitude Practice Question and Answer

Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 1819 0

  • 1
    24%
    Correct
    Wrong
  • 2
    29%
    Correct
    Wrong
  • 3
    34%
    Correct
    Wrong
  • 4
    25%
    Correct
    Wrong
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Answer : 4. "25%"
Explanation :

Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.

Q: A man rows his boat 60 km downstream and 30 km upstream taking 3 hrs each time. Find the speed of the stream ? 1816 0

  • 1
    5 kmph
    Correct
    Wrong
  • 2
    10 kmph
    Correct
    Wrong
  • 3
    15 kmph
    Correct
    Wrong
  • 4
    45 kmph
    Correct
    Wrong
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Answer : 1. "5 kmph"
Explanation :

Answer: A) 5 kmph Explanation: Speed of the boat downstream  s=a/t= 60/3 = 20 kmph Speed of the boat upstream s= d/t = 30/3= 10 kmph   Therefore,  The speed of the stream = speed of downstream - speed of upstream2=5 kmph

Q: Find the Missing number in the given number series? 5, 9, 15, 23, ?, 45 1812 0

  • 1
    33
    Correct
    Wrong
  • 2
    29
    Correct
    Wrong
  • 3
    31
    Correct
    Wrong
  • 4
    35
    Correct
    Wrong
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Answer : 1. "33"
Explanation :

Answer: A) 33 Explanation: The given series follows a pattern that, +4, +6, +8, +10, +12... 5 5 + 4 = 9 9 + 6 = 15 15 + 8 = 23 23 + 10 = 33 33 + 12 = 45   Hence, the missing number in the series is 33.

Q: Two bus tickets from city K to L and three tickets from city K to M cost Rs. 77,  but three tickets from city K to L and two tickets from city K to M cost Rs. 73. What are the fares for cities L and M from K ? 1810 0

  • 1
    Rs. 13 and Rs. 17
    Correct
    Wrong
  • 2
    Rs. 17 and Rs. 19
    Correct
    Wrong
  • 3
    Rs. 23 and Rs. 17
    Correct
    Wrong
  • 4
    Rs. 13 and Rs. 19
    Correct
    Wrong
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Answer : 1. "Rs. 13 and Rs. 17"
Explanation :

Answer: A) Rs. 13 and Rs. 17 Explanation: If fares for cities L and M from K are x and y respectively, then 2x + 3y = 77 or 6x + 9y = 231...(1)3x + 2y = 73 or 6x + 4y = 146...(2) subtracting 2 from 1, we get 5y = 85 y = Rs. 17 => x = Rs. 13

Q: How many square units in 13 by 9? 1809 0

  • 1
    13
    Correct
    Wrong
  • 2
    9
    Correct
    Wrong
  • 3
    117
    Correct
    Wrong
  • 4
    13/9
    Correct
    Wrong
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Answer : 3. "117"
Explanation :

Answer: C) 117 Explanation: Number of square units in 13 by 9 is given by the area it forms with length and breadth as 13 & 9 Area = 13 x 9 = 117   Hence, number of square units in 13 by 9 is 117 sq.units.

Q: Excluding stoppages, the average speed of a bus is 60 km/hr and including stoppages, the average speed of the bus is 40 km/hr. For how many minutes does the bus stop per hour ? 1809 0

  • 1
    2 hrs
    Correct
    Wrong
  • 2
    20 min
    Correct
    Wrong
  • 3
    40 min
    Correct
    Wrong
  • 4
    30 min
    Correct
    Wrong
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Answer : 2. "20 min"
Explanation :

Answer: B) 20 min Explanation: In 1hr, the bus covers 60 km without stoppages and 40 km with stoppages. Stoppage time = time take to travel (60 - 40) km i.e 20 km at 60 km/hr. stoppage time = 20/60 hrs = 20 min.

Q: Ronika deposited Rs.7000 which amounted to Rs.9200 after 3 years at simple interest. Had the interest been 2% more. She would get how much ? 1809 0

  • 1
    9850
    Correct
    Wrong
  • 2
    9500
    Correct
    Wrong
  • 3
    9620
    Correct
    Wrong
  • 4
    9760
    Correct
    Wrong
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Answer : 3. "9620"
Explanation :

Answer: C) 9620 Explanation: As the interest rate increases by 2%=> (7000x3x2)/100 = 420                                   9200                                  --------                                   9620

Q: What is the equivalent compound ratio of 5:6::7:10::6:5  ? 1808 0

  • 1
    7 : 9
    Correct
    Wrong
  • 2
    9 : 7
    Correct
    Wrong
  • 3
    7 : 4
    Correct
    Wrong
  • 4
    7 : 10
    Correct
    Wrong
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Answer : 4. "7 : 10"
Explanation :

Answer: D) 7 : 10 Explanation: Given 5:6 :: 7:10 :: 6:5 We know that compound ratio is calculated as a:b :: c:d :: e:f(axcxe):(bxdxf) => (5x7x6):(6x10x5)=> (210):(300)= 7:10

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