Question

Cost of 5 books and 4 notebooks is Rs 100.if the cost of 1 book be Rs 12,find the cost of one notebook?

Answer 1

let cost of 1 notebook = x
5×12+4x=100
60+4x=100
4x = 100-60=40
x=40÷4
=10

Answer 2

Hello Friend,
Cost of 5 books and 4 notebooks = Rs. 100
The cost of 1 book =Rs. 12
Then, the cost of 5 book = Rs. 12×5=Rs.60
Then, the cost of 4 notebooks = Rs.100-60
= Rs.40
Then, the cost of 1 notebook = 40 / 4
= Rs. 10
Hence, the cost of the 1 notebook = Rs. 10

☆☆☆☆Hope this will help you. ☆☆☆☆☆.