Question

If 4/13 of a number is 39, what is 8/13 of that number?(A) 39/4 (B) 78 (C) 16 (D) 39/8

Answer 1

8/13 of that number is 78

Step-by-step explanation:

Let the required number be x

Now, 4/13 of x = x * 4/13

= 4x/13

According to the question,

4x/13 = 39

or, x = 39 * 13/4

or, x = 507/4

∴ the required number is 507/4

Then 8/13 of 507/4 is

= 507/4 * 8/13

= 78

Note: To solve this type of problems, remember the following steps -

• consider the number as x, or something else

• find its percentage value

• equate the above value with given value

• calculate carefully step-by-steps

• you find x as a known number

• the problem is solved

Similar type problem is solved here:

If 18% of a number is 72, find the number.

- https://brainly.in/question/15185170