Question

The coast of 6 notebook R.S
90 what is the coast of 25 notebook

Answer 1

6 notebooks = 90rs

1 notebook = 90/6rs

Therefore , 25 notebooks = 90/6*25

= 375rs

Answer 2

cost of 6 notebooks=Rs.90

so,cost of 1 notebook will be=

$90 \div 6 =rs \:15$

therefore,cost of 25 notebooks will be equal to

$25 \times 15 = rs \: 375$