8Dec, 2021
Mixed Quantitative Aptitude Questions Set 242
  1. The discount allowed on an article is rs.960 more than the profit earned on the article. If the selling price of the article is rs.1920 and shopkeeper marked the article 100% above its cost price, then find profit% earned on the article.
    10%
    20%
    12%
    18%
    40%
    Option B
    Let cost price of the article = rs.100x
    MP = 100x *2/1 = 200x
    ATQ, (200x – 1920 ) – (1920 – 100x) = 960
    300x = 4800
    x = 16
    CP = 1600
    Profit % = 1920 – 1600/1600 * 100 = 20%

     

  2. The height of cylinder is equal to the side of square. If area of square is 196m^2 and ratio and ratio of radius to height of cylinder is 3 : 2, then find total surface area of such cylinder.
    5630
    6450
    3420
    4620
    6430
    Option D
    Side of square = √196 = 14m
    height = 14m
    radius = 14/7 * 6 = 21
    TSA = 2πr ( h + r)
    = 2 * 22/7 * 21(14 + 21)
    = 4620

     

  3. A man invested rs. P and (P + 350) each at the rate of 20% p.a on CI and SI respectively for two years. If ratio of total CI to total SI received by man is 44 : 75, then find amount invested by man on CI ?
    1050
    840
    450
    400
    800
    Option D
    Rate of CI for 2 years = 20 + 20 + 20 *20/100 = 44%
    CI received = P * 44/100 = 44P/100
    SI received by man = ( P + 350) 40/100 = 40P + 14000/100
    44P/40P + 14000 = 44/75
    P = 400

     

  4. If three unbiased coins are tossed simultaneously, then find the probability of getting at most two heads ?
    3/5
    7/8
    2/5
    4/7
    2/17
    Option B
    Total outcome = 2^3 = 8
    favorable outcome = 7
    probability = 7/8

     

  5. Pipe A and B alone can fill a tank in 20 hours and 24 hours respectively and outlet pipe C can empty same tank in 40 hours. If three pipes are opened simultaneously in how much time required to fill a empty tank ?
    20 hours
    15 hours
    18 hours
    14 hours
    28 hours
    Option B
    LCM of 20, 24 and 40 = 120
    efficiency of A = 120/20 = 6
    efficiency of B = 120/24 = 5
    efficiency of C = 120/40 = 3
    time required = 120/(6 + 5) – 3 = 15 hours

     

  6. Directions : What will come in place of questions marks (?) in the following number series ?
    85, 104, 189, 293, 482, ?
    875
    775
    456
    565
    235
    Option B
    The series is, (85 + 104), (104 + 289), (189 + 293), (293 + 482)

     

  7. 8, ?, 6, 15, 52.5, 236.25
    5
    4
    4.5
    2.5
    6
    Option B
    The series is, (* .5), (* 1.5), (* 2.5), (* 3.5), (* 4.5)

     

  8. ?, 2, 3, 8, 35, 204
    2
    4
    5
    6
    8
    Option A
    The series is, (* 2 – 2), (* 3 – 3), (* 4 – 4), (* 5 – 5), (* 6 – 6),

     

  9. 27, ?, 159, 324, 555, 852
    60
    86
    78
    34
    80
    Option A
    The series is, difference of difference.

     

  10. 68, 92, 66, 94, 64, ?
    84
    90
    102
    96
    86
    Option D
    The series is, (+ 24), (- 26), (+ 28), (- 30), (+ 32)

     

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