Adam's age is a multiple of 8 this year.
His age 5 years later will be multiple of 3.
- What is Adam's age this year?
- What was Adam's age 10 years ago?
- What is Adam's age 2 years later?
Multiple(s) of 8: 8, 16
Multiple(s) of 8 (+5): 13, 21
Multiple(s) of 3: 3, 6, 9, 12, 15, 18, 21
21 appears in both the multiples of 3 and the multiples of 8 (+5).
21 is Adam's age 5 years later.
(a) Adam's age this year = 16
(b) Adam's age 10 year ago = 16 - 10 = 6
(c) Adam's age 8 years later = 16 + 2 = 18
Answer(s): (a) 16; (b) 6; (c) 18