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In a mixture, the initial ratio of A and B is 1 ∶ 4, If 25% of the mixture is taken out and 20 litres of B is added, then the amount of B becomes 44 litres then find the initial amount of A.1. 8 litre 2. 6 litre3. 5 litre4. 4 litre5. None of these |
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Answer» Correct Answer - Option 1 : 8 litre Given: The initial ratio of A and B is 1 : 4 Amount of B becomes 44 litres Concept used: When some fraction of mixture is taken out then the ratio of the remaining mixture is the same Calculation: Let the initial ratio of the mixture be x and 4x respectively And, 25% of the mixture is taken out then the quantity of mixture becomes 3x/4 and 3x Now, According to the question: 3x + 20 = 44 ⇒ 3x = 24 ⇒ x = 8 ∴ The initial Amount of A is 8 litre |
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