Goni went to market with certain amount of money. With this money he can buy either 50 apples or 40 pears. He retains 10% of the money for bus fare and buys 20 pears. How many apples can be buy?

A 18
B 30
C 15
D 20

Correct Answer: 20

Here,  50 apples ≡ 40 pears Money for bus fare ≡ 10% of 50 apples or 10% of 40 pears ≡ 5 apples or 4 pears He buys 20 pears. So, the rest of the money ≡ (40 - 4 - 20 = 16) pears ≡ 20 apples
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