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Quantitative Aptitude Questions for IBPS Exam Set – 30

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Hello Aspirants. Welcome to Online Quantitative Aptitude section in AffairsCloud.com. Here we are creating question sample From all topics , which are Important for upcoming IBPS and RRB exams. We have included Some questions that are repeatedly asked in exams.

  1. A bike during a fog passes a man who was walking at the rate of 3 km/hr in the same direction. He could see the bike for 4 min and it was visible to him up to a distance of 100m. What was the speed of the bike?
    A. 4 1/3 km/hr
    B. 4 2/3 km/hr
    C. 4 1/2 km/hr
    D. 4 km/hr
    C. 4 1/2 km/hr
    Explanation:
    Let speed of bike = x
    Moving in same direction, so relative speed = (x-3) km/hr
    With this relative speed, the bike is seen for 4 min (1/15 hr) up to a distance of 100m (0.1 km), so
    x – 3 = 0.1/(1/15)
    x = 1.5 + 3 = 4.5

  2. A man can row 3/8th of a km upstream in 30 min and return in 12 min. Find the speed of boat in still water.
    A. 21/13 km/hr
    B. 21/16 km/hr
    C. 19/16 km/hr
    D. 19/13 km/hr
    C. 21/16 km/hr
    Explanation:
    Upstream speed = 3/8 / (30/60) = 3/4 km/kr
    Dowmstream speed = 3/8 / (12/60) = 15/8 km/kr
    Speed of boat in still water = 1/2 (3/4 +15/8)

  3. 12 men and 16 boys can do a piece of work in 5 days and 13 men and 24 boys can do it in 4 days, how long will 7 men and 10 boys take to do it?
    A. 7 days
    B. 8 days
    C. 8 1/3 days
    D. 9 1/3 days
    C. 8 1/3 days
    Explanation:
    12m + 16b = 1/5
    13m + 24b = 1/4
    Solve the equations
    m = 1/100, b = 1/200
    So 7 men and 10 boys do in 7/100 + 10/200 = 8 1/3

  4. 5 years ago, ratio of ages of A and B was 3 : 7 and 10 years hence the ratio will be 3 : 5. Find the age of B 20 years from now.
    A. 40 years
    B. 24 years
    C. 30 years
    D. 60 years
    D. 60 years
    Explanation:
    a-5/b-5 = 3/7
    a+10/b+10 = 3/5
    Solve, a = 20, b = 40
    Ans 40 + 20

  5. 100 cats can eat 100 rats in a day. How many rats will be eaten by 1 cat in 100 days?
    A. 100
    B. 10000
    C. 1
    D. 200
    A. 100
    Explanation:
    Let x rats be eaten by 1 cat
    100*x*1 = 1*100*100

  6. A sum of money invested at compound interest amounts to Rs 4624 in 2 yrs and Rs 4913 in 3 yrs. The sum of money is
    A. Rs 4096
    B. Rs 4260
    C. Rs 4335
    D. Rs 4360
    A. Rs 4096
    Explanation:
    4913 = P [1 + r/100]3
    4624 = P [1 + r/100]2
    Divide both equations, find r
    Put value of r in one of the equations to find P

  7. The difference between compound interest and simple interest on a sum for 2 yrs at 10% per annum, when the interest is compounded annually is Rs 16. If the interest were compounded half yearly, the difference in two interests would be
    A. Rs 24.81
    B. Rs 26.90
    C. Rs 31.61
    D. Rs 32.40
    A. Rs 24.81
    Explanation:
    when time is 2 yrs
    Diff between SI and CI = Pr2/1002, so
    16 = P * 102/1002
    P = 1600
    SI = 1600*10*2/100
    for compounded half yearly, CI = 1600[1+5/100]4 – 1600
    Calculate and find the difference now

  8. The number of employees in companies A, B and C are in the ratio of 5 : 4 : 6. If the number of employees in the companies is increased by 30%, 25% and 50% respectively, what will be the new ratio of employees working in companies A, B, and C
    A. 18 : 17 : 10
    B. 10 : 13 : 18
    C. 13 : 10 : 18
    D. 13 : 15 : 18
    C. 13 : 10 : 18
    Explanation:
    130/100 * 5 : 125/100 * 4 : 150/100 * 6

  9. In a circular race of 900m length, A and B start with speeds 27 km/hr and 36 km/hr resp starting at the same time from the same point. When will they meet for the first time at the starting time at the starting point when running in opposite direction?
    A. 2 min 50 sec
    B. 6 min
    C. 5 min 40 sec
    D. 7 min
    B. 6 min
    Explanation:
    Time taken by A = 0.9/27 * 60 = 2 min
    Time taken by B = 0.9/36 * 60 = 3/2 min
    First time they meet at = LCM (2 , 3/2) = 6 min

  10. A conical vessel whose internal radius is 12 cm and height 50 cm is full of liquid. The contents are emptied into a cylindrical vessel with internal radius 10 cm. Find the height to which the liquid rises in the cylindrical vessel.
    A. 12 cm
    B. 14 cm
    C. 20 cm
    D. 24 cm
    D. 24 cm
    Explanation:
    Vol. of cylinder = Vol. of cone
    22/7 *10 * 10 * h = 1/3 * 22/7 * 12 * 12 * 50