Adam's age is a multiple of 8 this year.
His age 3 years later will be multiple of 9.
- What is Adam's age this year?
- What was Adam's age 5 years ago?
- What is Adam's age 10 years later?
Multiple(s) of 8: 8, 16, 24
Multiple(s) of 8 (+3): 11, 19, 27
Multiple(s) of 9: 9, 18, 27
27 appears in both the multiples of 9 and the multiples of 8 (+3).
27 is Adam's age 3 years later.
(a) Adam's age this year = 24
(b) Adam's age 5 year ago = 24 - 5 = 19
(c) Adam's age 8 years later = 24 + 10 = 34
Answer(s): (a) 24; (b) 19; (c) 34