## A man bought 36 oranges at 6 for Rs 5 and sold them at 1 rupee each. Find his gain or loss per cent.

Question

A man bought 36 oranges at 6 for Rs 5 and sold them at 1 rupee each. Find his gain or loss per cent.

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1 month 2021-08-17T03:53:00+00:00 2 Answers 0 views 0

1. A person sells 36 oranges per rupee and suffers a loss of 4%. Find how many oranges per rupee need to be sold to have a gain of 8%.

Principle of recovery- The best method to tackle these kind of problems.

To gain more, one must have the ‘tendency’ to sell less.

With 36 oranges, I could recover only 96% of the cost.

How many I must sell to recover 108% of the cost?

Principle of recovery reduces this question to one arithmetic calculation- 36*(96/108) =32

Why 96/108? – This value shows the ‘tendency’ to sell less to maximise profit. Since, I have to shoot up my gains, I’d multiply the original sale with a smaller ratio to get the required number.

Think Smart. Minimise redundant calculations where you can 🙂