Question

15 postcard cost ₹7•50 find the cost of 36 postcard

Answer 1

The cost of 36 postcards is ₹18

Explanation:

Given:

1. Cost of 15 postcards is ₹ 7.50

To find:

The cost of 36 postcards

Solution:

==> Cost of 15 postcards is ₹ 7.50

==> 15 Post cards = ₹ 7.50

==> Find the cost of one postcards

==> divide by 15 on both sides

==> $\frac{15}{15}= \frac{7.50}{15}$

==> 1 postcard = ₹ 0.5

==> The cost of 36 postcards is

==> Multiply by 36 on both sides

==> 1×36 = 0.5×36

==> 36 postcards = ₹18

The cost of 36 postcards is ₹18