Adam's age is a multiple of 11 this year.
His age next year will be multiple of 6.
Adam's age is between 10 and 20.
- What is Adam's age this year?
- What was Adam's age 9 years ago?
- What is Adam's age 3 years later?
Multiple of 11: 11
Multiple of 11 (+1): 12
Multiple of 6: 6, 12
12 appears in both the multiples of 11 (+1) and the multiples of 6.
(a) Adam's age this year = 11
(b) Adam's age 9 years ago = 11 - 9 = 2
(c) Adam's age 3 years later = 11 + 3 = 14
Answer(s): (a) 11; (b) 2; (c) 14