Adam's age is a multiple of 3 this year.
His age 3 years later will be multiple of 8.
- What is Adam's age this year?
- What was Adam's age 4 years ago?
- What is Adam's age 10 years later?
Multiple(s) of 3: 3, 6, 9, 12, 15, 18, 21
Multiple(s) of 3 (+3): 6, 9, 12, 15, 18, 21, 24
Multiple(s) of 8: 8, 16, 24
24 appears in both the multiples of 8 and the multiples of 3 (+3).
24 is Adam's age 3 years later.
(a) Adam's age this year = 21
(b) Adam's age 4 year ago = 21 - 4 = 17
(c) Adam's age 3 years later = 21 + 10 = 31
Answer(s): (a) 21; (b) 17; (c) 31