Question

The price of a dozen exercise books is 72. Find the cost of 18 exercise books.

Answer 1

Step-by-step explanation:

Let, the no. of exercise books be X and the cost of no. of books be y.

According to the condition,

12/72 = 18/y

12y= 18* 72

y= 1296/12

y= 108

Therefore, the cost of 18 books is Rs. 108.

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