Question

Rohan purchased a small basket full of apples at the rate of 9 for ₹10 and sold them all at the rate of 10 for ₹13. He made a profit of ₹34. How many apples did the basket contain?​

Answer 1

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Given :-

Rohan purchased a small basket full of apples at the rate of 9 for ₹10 and sold them all at the rate of 10 for ₹13. He made a profit of ₹34

To Find :-

How many apples did the basket contain?

Solution :-

➡ The gain will be Re 1 and an apple, but that is probably not the intended/expected response.

• The percentage gain is what is required in a test of mathematics.

• Let us assume that 110 apples were bought and sold.

• The cost of 110 apples at 11 for Rs 10 is Rs 100.

• The selling price of 110 apples at 10 for Rs 11 is Rs 121.

• The profit is Rs 21.

• As the cost was Rs 100, it works out to 21%.

☄️Generalisation:

• if apples were bought at a for Rs b a S sold at b apples for Rs a, the profit percentage would be (a^2 - b^2)*100/b^2.

Answer 2

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To Find :-

How many apples did the basket contain?

Solution :-

• ➡ The gain will be Re 1 and an apple, but that is probably not the intended/expected response.

• The percentage gain is what is required in a test of mathematics.

• Let us assume that 110 apples were bought and sold.

• The cost of 110 apples at 11 for Rs 10 is Rs 100.

• The selling price of 110 apples at 10 for Rs 11 is Rs 121.

• The profit is Rs 21.

• As the cost was Rs 100, it works out to 21%.

☄️Generalisation:

if apples were bought at a for Rs b a S sold at b apples for Rs a, the profit percentage would be (a^2 - b^2)*100/b^2.