Question

If the cost of 5 books rs.75. Cost of 15 books

Answer 1

Cost of 5 books = Rs. 75

Cost of 1 book = Rs. (75/5) = Rs. 15

Answer 2

Answer:

The cost of 15 book is Rs 225 .

Step-by-step explanation:

Given information,

the cost of 5 books is Rs 75 .

We have to find out The cost of 15 book

As,

The cost of 5 books = Rs. 75

The cost of 1 book = $\frac{the \: cost \: of \: 5\: book}{5}$

The cost of 1 book $= \frac{75}{5}$

By dividing 75 by 5 we get

The cost of 1 book $= 15$

The cost of 1 book is Rs. 15 .

The cost of 15 book = The cost of 1 book × 15

The cost of 15 book= $15 \times 15$

The cost of 15 book= $225$

Hence,

The cost of 15 book is Rs 225 .