Question

There is 10percent profit by selling a book.If the selling price would have been ₹7 less, what would have been 4 percent loss.What is the cost price of a book.​

Answer 1

Difference in profit = 10-(-4) = 14 percent

Difference in price = Rs.7

find the cost price

14 percent = Rs.7

1 Percent = 7/14 = Rs.0.50

100 percent = 0.5 × 100 = Rs.50

check :

10 percent profit = 0.1 × 50 = Rs.5

selling price = 50+5 = Rs.55

4 percent loss = 0.04 × 50 = Rs.2

selling price = 50 - 2 = RS.48

Difference in price = 55 - 48 = Rs. 7

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