Question

if 40% of a number is 256, then what is the 25% of that number

Answer 1

Step-by-step explanation:

Let the number be x

40% of x = 256

40/100 × x = 256

x = 256 × 100/40

x = 64 × 10

x = 640

Let the final answer be y

25% of 640 = y

y = 25/100 × 640

y = 1/4 × 640

y = 160

Therefore, 25% of that number (640) is 160.

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Answer 2

Answer:

If 40% of a number is 256, then 25% of that number is 160.

Step-by-step explanation:

Let 'x' be the unknown number.

40 % of '$x$' is 256

That is $\frac{40}{100}$×$x$ = 256

∴ $x$ = 256 ×$\frac{100}{40}$ = 256 × $\frac{5}{2}$ = 640

Therefore unknown number is 640

25% of 640 = $\frac{25}{100}$ × 640 = 160

Hence 25% of that number is 160