Adam's age is a multiple of 9 this year.
His age 3 years later will be multiple of 8.
- What is Adam's age this year?
- What was Adam's age 8 years ago?
- What is Adam's age 10 years later?
Multiple(s) of 9: 9, 18, 27, 36, 45
Multiple(s) of 9 (+3): 12, 21, 30, 39, 48
Multiple(s) of 8: 8, 16, 24, 32, 40, 48
48 appears in both the multiples of 8 and the multiples of 9 (+3).
48 is Adam's age 3 years later.
(a) Adam's age this year = 45
(b) Adam's age 8 year ago = 45 - 8 = 37
(c) Adam's age 9 years later = 45 + 10 = 55
Answer(s): (a) 45; (b) 37; (c) 55