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Question

is two years older than B who is twice as old as C. If the total of the ages of A, B and C be 27, the how old is B?


A
7
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B
8
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C
9
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D
10
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E
1
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Solution

The correct option is C 10
Let C's age be x years. Then, B's age = 2x years. A's age = (2x + 2) years.
$$\therefore (2x + 2) + 2x + x = 27$$
$$\Rightarrow 5x = 25$$
$$\Rightarrow x = 5$$
Hence, B's age = 2x = 10 years

Mathematics

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