The total of present age of P, Q and R is 90 years. Ten years back their age ratio was 1:2:3. What is the present age of Q

36

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30

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18

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20

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Solution

The correct option is B $30$
Let rational amount be x
Then $x + 2 x + 3 x = 90 - (10 + 10 + 10)$
$\Rightarrow 6 x = 60$
$\Rightarrow x = 10$
Age of $Q = 2 x = 20$
Present age $= 20 + 10 = 30 y e a r s$

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