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CAPF - Mixture & Alligation Test 1176
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CAPF - Mixture & Alligation Test 1176
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  • Question 1/5
    1 / -0.33
    12 pump takes 15 days and 6 hours per day to drain out the pond. How much pump needed to drain out pond if they work 9 hours per day in 12 days?
    Solutions

  • Question 2/5
    1 / -0.33
    A king ordered to make a crown from 8 kg of gold and 2 kg of silver. The goldsmith took away some amount of gold and replaced it by an equal amount of silver and the crown when made, weight 10 kg. The king knows that under water gold loses  of its weight, while silver loses . When the crown was weighed under water, it was 9.25 kg. How much gold was stolen by the goldsmith?
    Solutions

    Let the amount that is replaced =X kg

    So now weight of gold= 8-x

    Weight of silver= 2+X

    Gold loses 1/20th under water, so under water weight of gold =

    Silver loses 1/10th under water, so under water weight of silver =

    The total weight of crown under water is 9.25 kg

    So ,

    ,

    ,

    .75 -0.6=X/20,

    0.15*20=X,

    X=3 kg.

  • Question 3/5
    1 / -0.33
    Two glasses of equal volume are respectively half and three- fourths filled with milk. They are then filled to the brim by adding water. Their contents are then poured into another vessel. What will be the ratio of milk to water in this vessel.
    Solutions

    Milk in 1st glass =

    Milk in 2nd Glass =

    Now the water in the 1st glass =

    and the water in the 2nd glass =

    When both glasses are mixed then the ratio of milk to water

    So, option D is correct.

  • Question 4/5
    1 / -0.33
    Zinc and copper are melted together in the ratio 9:11, What is the weight of melted mixture, if 28 .8 kg of zinc has been consumed in it?
    Solutions

    The ratio of Zinc and copper are melted in the ratio 9:11

    If 9 parts = 28.8 kg

    20 parts = ?

    9 parts----------------------------------- 28.8 kg

    1 parts -----------------------------

    Similarly

    20 parts --------------------.20

    20 parts ------------------ 64 kg

    Hence, total mixture is of weight 64 kg

    So, option C is correct.

  • Question 5/5
    1 / -0.33
    A canister holds 36 ltr of mixture of milk and water in a ratio 3 : 1. 15 ltr of milk is added to the canister. The new ratio of the mixture is?
    Solutions

    Correct answer is option B

    Total mixture = 36 ltr

    Milk and water in ratio 3 : 1

    Milk = 3x

    Water =1x

    Total = 3x + 1x = 4x = 36

    x = 9

    milk = 27 ltr

    water = 9 ltr

    now 15 ltr milk is added to canister so, total milk is = 27 +15 = 42 ltr

    new ratio of milk and water become 42 : 9 = 14 : 3

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