Mixed Quantitative Aptitude Questions Set 235

  1. 6 men or 8 women or 3 boys completed certain work in a day is equal. Find in how many days a man and a boy can complete the three-fourth of same work together ?
    2 days
    3 days
    5 days
    6 days
    1.5 days
    Option E
    Let total work = 48
    6 men = 8men = 3 boys
    efficiency of a man = 48/6 = 8
    efficiency of a woman = 48/8 = 6
    efficiency of a boy = 48/3 = 16
    days require = 48/(16 + 8) * 3/4 = 1.5 days

     

  2. A sum becomes rs.9280 in 6 years and becomes rs.10440 in 8 days at the same rate on simple interest. Find compound interest earned in 2 years on rs.6000 at same rate of interest ?
    1520
    1840
    2540
    1340
    1260
    Option E
    SI for 2 years = 10440 – 9280 = 1160
    SI for 6 years = 1160/2 * 6 = 3480
    sum = 9280 – 3480 = 5800
    rate interest = 3480/(5800 * 6) *100 = 10%
    CI for 2 years = 10 + 10 + 10 * 10/100 = 21%
    CI = 6000 * 21/100 = 1260

     

  3. A bat was sold at rs,1260 after giving 30% discount on market price. If discount was not given, then he would have earned 50% profit. Find cost price of bat ?
    1400
    1280
    1800
    1200
    1440
    Option D
    Market price of bat = 1260/70 * 100 = 1800
    CP = 1800/150 * 100 = 1200

     

  4. Two trains travel from Mumbai to Bangalore and Bangalore to Mumbai in 10 hours and 12 hours respectively. Both trains started simultaneously at 8 am and the train started from Mumbai met with accident at 12 pm. Find percentage reduction in speed of train started from Mumbai, if they meet each other at 2 pm, assume there is no loss of time in accident ?
    30%
    48%
    50%
    42%
    20%
    Option C
    Ratio of speed is inversely proportional to time taken if distance is constant.
    Let speed of Mumbai to Bangalore travelling train = 6x km/hr
    speed of Bangalore to Mumbai travelling train = 5x km/hr
    Let total distance = 60x km
    let speed of train after accident = y km/hr
    60x = 4 (6x + 5x) + 2 (y + 5x)
    y = 3x km/hr
    reduction in speed = 6x – 3x/6x * 100 = 50%

     

  5. The radius of a circle is 14 km. What is area of another circle having radius 1.5 times of the actual circle ?
    1540 cm^2
    1386 cm^2
    1440 cm^2
    1450 cm^2
    1240 cm^2
    Option B
    Radius of another circle = 14 * 1.5 = 21 cm
    area = πr^2 = 22/7 * 21 * 21 = 1386 cm^2

     

  6. Directions : What will come in place of questions (?) mark in the following missing series ?
    4, 2, 3, 7.5, 26.25, ?
    120.125
    118.5
    114.5
    118.125
    120
    Option D
    The series is, (* .5), (* 1.5), (* 2.5), (* 3.5), (* 4.5)

     

  7. 148, 196, 268, 364, 484, ?
    650
    640
    452
    620
    628
    Option E
    The series is, (+ 48), (+ 72), (+ 96), (+ 120), (+ 144),

     

  8. 46, 52, ?, 136, 256, 466
    84
    78
    68
    76
    80
    Option D
    The series is, (+ 2^3 – 2), (+ 3^3 – 3), (+ 4^3 – 4), (+ 5^3 – 5), (+ 6^3 – 6),

     

  9. 16000, 8000, 24000, 6000, ?, 30000, 5000
    40000
    18000
    12000
    42000
    30000
    Option E
    The series is, (÷ 2), (* 3), (÷ 4), (* 5), (÷ 6)

     

  10. 24, 28, 36, 52, 84, ?
    240
    148
    120
    124
    168
    Option B
    The series is, (+ 4), (+ 8), (+ 12), (+ 32), (+ 64),

     

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