Correct Answer - Option 2 : Rs. 5
Given:
Cost of 25 notebooks and 10 books = 425
Calculation:
Let the cost of book is Rs. x
According to question:
Cost of 25 notebooks + cost of 10 book = 425
25(15) + 10x = 425
⇒ 10x = 425 – 375
⇒ 10x = 50
⇒ x = 5
∴ Cost of 1 book is Rs. 5