Question

if 40% of a number is 256, 25% of that number is

Answer 1

Let the number be x.

It is given that 40% of the number is 256.

So,

x × 40% = 256

\frac{40x}{100} = 256 \\ x = \frac{256 \times 10}{4} \\ x = 640

Now, 25% of 640 will be ...

640 \times \frac{25}{100} \\ = \frac{640}{4} = 160

Answer 2

number = a

a x 40/100 = 256

a = 25600/40 = 640

If number is 640, 25% of that number = 640 x 25/100  = 160