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Question

B is 3 years older than A and A is 7 years older than C. If the sum of the age of A and C is 27 years, then find the sum of the ages of all three. 

A 40 years Correct Answer Incorrect Answer
B 42 years Correct Answer Incorrect Answer
C 47 years Correct Answer Incorrect Answer
D 45 years Correct Answer Incorrect Answer

Solution

Let C’s present age be x years.  So, A’s present age = (x + 7) years  And B’s present age = (x + 7 + 3) = (x + 10) years  According to question, => x + 7 + x = 27  => 2x = 20 => x = 10 Required total sum = x + (x + 7) + (x + 10) = 3x + 17 = 47 years  

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