Question

7/16 of a number is 21. What fraction of the same number is 13 less than 21?​

Answer 1

Answer:

The required fraction is 1/6

Step-by-step explanation:

Let us consider the number as x.

Then 7/16 of x = 7x/16

Given 7x/16 = 21

or, 7x = 21 * 16

or, x = 48

So the number is 48

We have to find the fraction (say y) of 48 which is 13 less than 21. This is determined by

48y = 21 - 13

or, 48y = 8

or, y = 8 / 48

or, y = 1/6

Therefore 1/6 of the number 48 is 13 less than 21.