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Question 185
The average age of Nitika and Kruti is 21 years. The ratio of their ages is 4 : 3 respectively. What is Kruti’s present age ?
Solution
Let the age of Nikita and Kruti be 4x years and 3x years respectively
According to given condition
$$\frac{7x}{2}$$ = 21
x = 21 $$ \times \frac{2}{7}$$
x = 6
Kruti's present age = 3x =18 years
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