Mixed Quantitative Aptitude Questions Set 91

Directions(1-5) : What will come in plav eof question mark “?” in the following questions.

  1. 447.75 ÷ 28 × 4.99 = ?
    110
    60
    80
    90
    40
    Option C
    448 ÷ 28 × 5
    = 16 × 5 = 80

     

  2. 459% of 849.947 + 266.5% of 6284.012 – 1486.002 = ?
    18520
    11130
    12340
    15560
    19140
    Option E
    (460×850)/ 100 + 2.665 × 6284 − 1486
    = 3910 − 1486 + 2.66 × 6284
    == 19140

     

  3. (9321 + 5406 + 1001) ÷ (498 + 929 + 660) = ?
    6.3
    7.5
    5.5
    8.2
    6.5
    Option B
    (9321 + 5406 + 1001) ÷ (498 + 929 + 660)
    = 15728 ÷ 2087 == 7.5

     

  4. 5237.897 – 6629.010 + 7153.999 – 2205.102 = ?
    4205
    3869
    4580
    3558
    3560
    Option D
    5238 − 6630 + 7154 − 2205
    = 12392 − 8835 = 3557 == 3558

     

  5. 1679 ÷ 14.95 × 5.02 = ?
    522
    560
    458
    555
    652
    Option B
    1680 ÷ 15 × 5
    = 112 × 5 = 560

     

  6. In a mixture of Zinc, Copper and tin, Zinc is 40% in the mixture and copper is 25% in mixture, 20kg of mixture taken out and 12kg zinc and 15kg copper added in mixture so that new ratio between zinc and copper becomes 6 : 5. Find the initial quantity of mixture ?
    90 kg
    80 kg
    60 kg
    50 kg
    20 kg
    Option B
    Ratio between zinc : copper : tin in mixture
    = 40 : 25 : 35
    = 8 : 5 : 7
    Let initial quantity of zinc, copper and tin in mixture 8x, 5x and 7x respectively.
    [8x – 20*8/20 + 12]/[5x – 20*5/20 + 15] = 6/5
    => x = 4
    Initial quantity
    = 8 * 4 + 5 * 4 + 7 * 4
    = 80 kg

     

  7. Mohit and Ankit entered into partnership business, Mohit invested Rs. 10200 and Ankit invested Rs. 10800 for first six months after that Mohit double his capital for next 4 months then withdraw its investment and Ankit half his initial amount for next six months. If they got total profit of Rs. 50000 after a year then find the profit share of Mohit?
    Rs. 29750
    Rs. 28760
    Rs. 27050
    Rs. 22760
    Rs. 31750
    Option A
    Ratio of profit of share of Mohit and Ankit
    = (10200 * 6 + 20400 * 4) : (10800 * 6 + 5400 * 6)
    = 119 : 81
    Mohit’s share
    = 50000* 119/200 = Rs. 29750

     

  8. Veer invested Rs.40000 at the rate of 20% compound interest. If first year interest calculated half yearly and second year calculate annually, then find the total interest Veer gets after 2 year ?
    Rs. 19500
    Rs. 18000
    Rs. 15050
    Rs. 11000
    Rs. 18080
    Option E
    Half-yearly rate = 20/2 = 10%
    Overall rate = 10 + 10 + 10*10/100 = 21%
    1st year interest = 40000*21/100 = Rs. 8400
    2nd year interest = (40000 + 8400)*20/100
    = Rs. 9680
    Total interest = Rs. 18080

     

  9. In 160 litre mixture of milk and water, ratio of milk to water is 5 : 3, if 24 ℓ mixture taken out from the mixture and same amount of water added in mixture then find the percentage of water in new mixture found ?
    46(7/8)%
    26(5/8)%
    32(3/4)%
    41(5/8)%
    40(6/8)%
    Option A
    Mixture = 160 l Milk : Water = 5:3
    Quantity of Milk = 160*5/8 = 100 l
    Quantity of Water =160*3/8 = 60 l
    24 l mixture is taken out
    Milk = 24 * 5/8 = 15 l
    Water = 24 * 3/8 = 9 l
    New quantity : Milk = 100 – 15 = 85 l
    Water = 60 – 9 + 24 = 75 l
    % of water in the new mixture
    = 75 / (85+75)*100 = 46(7/8)%

     

  10. Still water speed of boat is three times of the current speed. If a boat travel 72 downstream and return upstream in total 33 hours in which boat lost 25% of its upstream speed while returning, then find speed of boat in still water ?
    6 km/hr
    4 km/hr
    8 km/hr
    2 km/hr
    3 km/hr
    Option D
    Let still water speed of boat is x km/hr and current speed is y km/hr
    Given x = 3y
    Now, 72/(3y+y) + 72/(3y-y)*3/4 = 33
    => 72/4y + 72/3y = 33
    => y = 2 km/hr.

     


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