Adam's age is a multiple of 5 this year.
His age 2 years later will be multiple of 9.
- What is Adam's age this year?
- What was Adam's age 4 years ago?
- What is Adam's age 8 years later?
Multiple(s) of 5: 5, 10, 15, 20, 25
Multiple(s) of 5 (+2): 7, 12, 17, 22, 27
Multiple(s) of 9: 9, 18, 27
27 appears in both the multiples of 9 and the multiples of 5 (+2).
27 is Adam's age 2 years later.
(a) Adam's age this year = 25
(b) Adam's age 4 year ago = 25 - 4 = 21
(c) Adam's age 5 years later = 25 + 8 = 33
Answer(s): (a) 25; (b) 21; (c) 33