Question
Anil goes to an electronics store with some money. He
can buy 25 headphones or 50 earphones with the money with him. However, instead of spending the entire amount, he saves 20% of the amount for a meal and buys 10 headphones and some earphones. Find the percentage of number of earphones he can purchase now out of the initial number of earphones he could have purchased.Solution
ATQ Let the amount of money with Anil be Rs. '150d' So, the price of 1 headphone = (150/25) = Rs. '6d' Also, the price of 1 earphone = (150/50) = Rs. '3d' ATQ; Amount retained for a meal = 0.20 X 150d = Rs. '30d' Price of 10 headphones = 10 X 6d = Rs. '60d' Remaining amount = 150d - 30d - 60d = Rs. '60d' So, number of earphones he can purchase now = (60d/3d) = 20 Therefore, required percent = (20/50) X 100 = 40%
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