Question

A is 25% older than B. By what percent is B younger than A

Answer 1

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Answer 2

Answer:

20% is B younger than A

Step-by-step explanation:

Let age of B be 100

As per the statement:

A is 25% older than B

⇒$A = \frac{125}{100}B$

⇒$A = \frac{125}{100} \cdot 100 = 125$ years.

We have to find what percent is B younger than A./

Change in ages = 125 -100 = 25 years

then;

$\text{Percent} = \frac{\text{Changes in ages}}{\text{Age of A}} \times 100$

Substitute the given values we have;

$\text{Percent} = \frac{25}{125} \times 100 = 20\%$

therefore, 20% is B younger than A