Adam's age is a multiple of 9 this year.
His age 2 years later will be multiple of 8.
- What is Adam's age this year?
- What was Adam's age 5 years ago?
- What is Adam's age 9 years later?
Multiple(s) of 9: 9, 18, 27, 36, 45, 54
Multiple(s) of 9 (+2): 11, 20, 29, 38, 47, 56
Multiple(s) of 8: 8, 16, 24, 32, 40, 48, 56
56 appears in both the multiples of 8 and the multiples of 9 (+2).
56 is Adam's age 2 years later.
(a) Adam's age this year = 54
(b) Adam's age 5 year ago = 54 - 5 = 49
(c) Adam's age 9 years later = 54 + 9 = 63
Answer(s): (a) 54; (b) 49; (c) 63