Multiple Choice Questions on The concentration of petrol in three different mixtures petrol and kerosene is 1 2 3 5 and 4 5 respe........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

The concentration of petrol in three different mixtures petrol and kerosene is 1 2 3 5 and 4 5 respe...........

Quantitative Aptitude ( CCS) Ratio, Proportion
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    The concentration of petrol in three different mixtures (petrol and kerosene) is 1/2 , 3/5 and 4/5 respectively. If 2 litres, 3 litres and 1 litre are taken from these three different vessels and mixed. what is the ratio of petrol and kerosene in the new mixture?

    4:5

    Incorrect Answer

    3:2

    Correct Answer

    2:3

    Incorrect Answer

    5:4

    Incorrect Answer
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    Explanation:

    Concentration of petrol in    A        B        C

                                            1/2      3/5     4/5

    Quantity of petrol taken from A = 1 litre out of 2 litre

    Quantity of petrol taken from B = 1.8litre out of 3 litre

    Quantity of petrol taken from C = 0.8 litre out of 1 litre

    Therefore, total petrol taken out from A, B and C = 1+1.8+0.8 =3.6 litres

    So, the quantity of kerosen =(2+3+1) - 3.6 =2.4 litre

    Thus, the ratio of petrol to kerosene = 3.6/2.4 = 3/2

    Hence, option 2 is the correct answer.

    By: Amit Kumar
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