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The ratio of the present ages of A and B is 2 : 3. Four years hence, ratio of their ages will be 5 : 7 respectively. What is the present age of A ?
- A24 years
- B20 years
- C21 years
- D16 years
Answer not set
Discussion 1
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CCommunity
Solution
Let present ages of A and B be '2x' and '3x'.
According to question,
$\frac{2x+4}{3x+4}=\frac{5}{7}$.
$14x+28=15x+20$.
$x=8$.
Hence, present age of A = 2x.
= 16 years.
So, Option D is correct.
Let present ages of A and B be '2x' and '3x'.
According to question,
$\frac{2x+4}{3x+4}=\frac{5}{7}$.
$14x+28=15x+20$.
$x=8$.
Hence, present age of A = 2x.
= 16 years.
So, Option D is correct.