Mixed Quantitative Aptitude Questions Set 129

  1. The numerator of a fraction is decreased by 25% and the denominator is increased by 250%. If the resultant fraction is 6/5, what is the original fraction?
    22/7
    17/5
    21/4
    20/3
    28/5
    Option E
    [x – 25x/100]/[y + 250y/100] = 6/5
    =>75x/350y = 6/5
    =>x /y = 28/5

     

  2. What is the difference between the compound interests on Rs. 5000 for 1 years at 4% per annum compounded yearly and half-yearly?
    4
    2
    6
    3
    8
    Option B
    When compounded yearly, Student = 200
    When compounded half – yearly
    r = 2%, n = 2
    Interest = 202
    Difference = 202 – 200 = 2

     

  3. A profit of 8% is made by selling a shirt after offering a discount of 12%. If the marked price of the shirt is Rs.1080, find its cost price.
    800
    820
    880
    833
    850
    Option C
    Cost Price = 1080*88/100*100/108 = 880

     

  4. A and B started a business with initial investments in the ratio 5 : 7. If after one year their profits were in the ratio 1 : 2 and the period for A’s investment was 7 months, B invested the money for how many months.
    10 months
    50 months
    40 months
    30 months
    20 months
    Option A
    Let B invested money for x months. 5*7 : 7*x = 1:2
    =>x = 10 months

     

  5. How many litres of water should be added to a 30 litre mixture of milk and water containing milk and water in the ratio of 7 : 3 such that the resultant mixture has 40% water in it?
    4
    7
    5
    8
    9
    Option C
    Let required quantity = x
    21/(9+x) = 3/2
    =>x = 5

     

  6. Directions(6-10): Find the missing term ‘?’ of the following series.

  7. 4,3,4,7,15, ?
    38.5
    30.1
    33.3
    29.7
    32.2
    Option A
    *0.5+1
    *1+1
    *1.5+1
    *2+1
    ? = 38.5

     

  8. 23,55,136,200,?,231
    212
    200
    225
    218
    202
    Option C
    +2^5,+3^4,+4^3,+5^2,+6^1
    ? = 225

     

  9. 7,5,7,17,63, ?
    313
    309
    319
    330
    311
    Option B
    *1-2
    *2-3
    *3-4
    *4-5
    *5-6
    ? = 309

     

  10. 2, 60, 10, 120, 30, ?
    200
    210
    222
    230
    214
    Option B
    1^3 + 1
    4^3 – 4
    2^3 + 2
    5^3 – 5
    3^3 + 3
    6^3 – 6
    ? = 210

     

  11. 11,14,19,28,43, ?
    60
    52
    74
    66
    59
    Option D
    Double difference
    ? = 66

     


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