Adam's age is a multiple of 7 this year.
His age 2 years later will be multiple of 8.
- 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 7: 7, 14
Multiple(s) of 7 (+2): 9, 16
Multiple(s) of 8: 8, 16
16 appears in both the multiples of 8 and the multiples of 7 (+2).
16 is Adam's age 2 years later.
(a) Adam's age this year = 14
(b) Adam's age 9 year ago = 14 - 9 = 5
(c) Adam's age 7 years later = 14 + 8 = 22
Answer(s): (a) 14; (b) 5; (c) 22