Question
Mixture ‘E’ of petrol and kerosene contains 35%
petrol. If some amount of mixture ‘E’ is taken in container ‘S’ and it contains 195 litres of kerosene, then find the total quantity of mixture in container ‘S’.Solution
ATQ, Ratio of petrol to kerosene in mixture ‘E’ = 0.35 : 0.65 = 7 : 13 So, kerosene corresponds to 13 parts. In container ‘S’, kerosene = 195 litres = 13 parts 1 part = 195 ÷ 13 = 15 litres Quantity of petrol in container ‘S’ = 7 × 15 = 105 litres Total quantity of mixture in container ‘S’ = 195 + 105 = 300 litres
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