Question

If 30 percent of a certain number is 240 what is 50 percent the number

Answer 1

400

Explanation:

0.30 * x = 240

x = 240/0.30 = 800

0.50 * 800 = 400

Answer 2

The value of 50 % of number is 400 .

Explanation:

Given as :

Let The number be x

According to statement

30 percent of a number is 240

I.e 30 % of x = 240

Or,
`(30)/(100)` × x = 240

Or, 0.3 × x = 240

So. x =
`(240)/(0.3)`

∴ x = 800

SO, The number is 800 .

Now again 50 percent of that number = y

I.e y = 50 % of x

or, y = 50 % of 800

Or, y =
`(50)/(100)` × 800

Or, y = 0.5 × 800

∴ y = 400

Hence The value of 50 % of number is 400 . Answer