Question

ra problems.
) If the cost of a notebook is 10. Then find the cost of 20 books.
By what number should be multiplied to get 52
9
4​

Answer 1

1) Given:

Cost of a notebook is 10 rupees.

To find:

Cost of 20 notebooks.

Solution:

Cost of a note book = 10 rupees.

Cost of 20 notebooks = Cost of one notebook * 20 = 20 * 10 = 200 rupees.

Conclusion:

Therefore, cost of 20 notebooks = 200 rupees.

2) Given:

By what number should be multiplied to get 52.

Solution:

(i) 9

We need to multiply 9 with 5.77777778 to get 52.

(ii) 4

We need to multiply 4 with 13 to get 52.