Adam's age is a multiple of 6 this year.
His age 2 years later will be multiple of 10.
- What is Adam's age this year?
- What was Adam's age 9 years ago?
- What is Adam's age 8 years later?
Multiple(s) of 6: 6, 12, 18
Multiple(s) of 6 (+2): 8, 14, 20
Multiple(s) of 10: 10, 20
20 appears in both the multiples of 10 and the multiples of 6 (+2).
20 is Adam's age 2 years later.
(a) Adam's age this year = 18
(b) Adam's age 9 year ago = 18 - 9 = 9
(c) Adam's age 6 years later = 18 + 8 = 26
Answer(s): (a) 18; (b) 9; (c) 26