Question
Tank 'X' contains 90 litres of a mixture of petrol and
diesel in the ratio 3:2 respectively. Tank 'Y' contains 110 litres of a solution containing petrol and kerosene in the ratio 4:7 respectively. If both mixtures are combined into a large tank 'P', what is the percentage of petrol in tank 'P'?Solution
ATQ,
Quantity of petrol in tank X = 90 × 3/5 = 54 litre Quantity of petrol in tank Y = 110 × 4/11 = 40 litre Quantity of petrol in tank P = 54 + 40 = 94 litre Quantity of mixture in tank P = 90 + 110 = 200 litre So the percentage of petrol in tank P = 94/200 × 100 = 47%
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