Last year, Kiril's age was a multiple of 7 .

This year, Kiril's age is a multiple of 5 .

In how many years will Kiril be 26 years old?
(A) 11
(B) 21
(C) 4
(D) 18
(E) 16
We need to find two consecutive numbers the first of which is a multiple of 7 and the second of which is a multiple of 5 .

We try the multiples of 7 and the numbers after each.

Do 7 and 8 work? No, since 8 is not a multiple of 5 .

Do 14 and 15 work? Yes, since 15 is a multiple of 5.

This means that this year, Kiril is 15 years old.

So it will be 11 years until Kiril is 26 years old.

(Of course, Kiril could also be 50 years old or 85 years old this year, but then he would have already been 26 years old in the past.)

ANSWER: (A)