Question

K is as much younger than M as he is older than O. If the sum of the ages of M and O is 100 years, what is definitely the difference between M and K’s age?

A 2 years Correct Answer Incorrect Answer
B 50 years Correct Answer Incorrect Answer
C 4 years Correct Answer Incorrect Answer
D Data inadequate Correct Answer Incorrect Answer
E None of these Correct Answer Incorrect Answer

Solution

The difference of age between M and K = The difference of age between K and O. Sum of age of M and 0 = 100 years (M – K) = (K – O) M + O = 2 K Now, given that M + O = 100 Therefore, 100 = 2K K = 50 years Now, M – K =? Here, we know the value (age) of K is 50, but we do not know the age of M. ∴ (M – K) cannot be determined.

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