Vishal went to market with some money. With this money, he could buy either 50 oranges or 40 mangoes. He retained exactly 10% of the money for taxi fare. If he bought 25 mangoes, then maximum how many oranges can he buy?
Explanation:
Let the price of each orange and mango be o and m respectively.
∴ Total amount with Vishal = 50o or 40m ⇒ 50o = 40m ⇒ 5o = 4m ⇒ o : m = 4 : 5
Let o = 4x and m = 5x and total amount = 50o = 200x
Vishal kept 10% of 200x i.e., 20x for taxi Amount left now = 200x - 20x = 180x.
Then, he bought 25 mangoes, hence cost of these 25 mangoes = 25m = 125x Amount left now = 180x - 125x = 55x.
Now, maximum oranges that he can buy = 55x/4x = 13.75 i.e., 13 oranges.
Hence, option (d).
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