Question

The ratio of the ages of Rini to her sister is 1:4. If Rini's age is 6 years then her sister's age is:

• A. 30 years
• B. 22 years
• C. 28 years
• D. 24 years

Answer 1

The correct option is D 24 years

Ratio of Rini's age to her sister's age $=1:4$
$\therefore$ $\frac{\text{Rini's age}}{\text{sister's age}}$ $=\frac{1}{4}$

Rini's age is $6$ years
$\therefore$ $\frac{6}{\text{sister's age}}$ $=\frac{1}{4}$

$\Rightarrow \text{sister's age}=6\times 4=24\text{years}$