Question

The cost price of $16$ books is equal to the selling price of $3$ books. Find the gain

Answer 1

b'Let $x$ be the cost of $1$ book.

Cost oof $16$ books $=16x$

Cost of $3$ books $=3x$

Seling price of $3$ books $=16x$

Profit $=\frac{16x-3x}{3x}\times 100=\frac{13}{3}\times 100=433.33$

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