Question

3. The selling price of 18 books is equal to the cost price of 21 books. Find the gain or loss per
4. The cost price of 12 fans is equal to the selling price of 16 fans. Find the gain or loss per cer
5. On selling 250 cassettes, a man had a gain equal to the selling price of 25 cassettes. Find his
ner cent​

Answer 1

Answer:

SP of 18 books = CP of 21 books

Let the SP of 1 book = Re 1

SP of 18 books = Rs. 18 = CP of 21 books

So we get CP of 21 books = 18

SP of 21 books = Rs 21

SP is greater hence profit

Profit = SP - CP = 21 - 18 = 3

Profit% = Profit/CP * 100

= 3/18 *100

= 100/6

= 16.66% profit

Answer 2

Answer:

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