Adam's age is a multiple of 9 this year.
His age 3 years ago was a multiple of 2.
- What is Adam's age this year?
- What was Adam's age 2 years ago?
- What is Adam's age 8 years later?
Multiple of 9: 9
Multiple of 9 (-3): 6
Multiple of 2: 2, 4, 6
6 appears in both the multiples of 9 (-3) and the multiples of 2.
Adam's age 3 years ago = 6
(a) Adam's age this year = 9
(b) Adam's age 2 year ago = 9 - 2 = 7
(c) Adam's age 9 years later = 9 + 8 = 17
Answer(s): (a) 9; (b) 7; (c) 17