Adam's age is a multiple of 8 this year.
His age 3 years ago is a multiple of 3.
Adam's age is between 20 and 30.
- What is Adam's age this year?
- What is Adam's age 6 years ago?
- What is Adam's age 5 years later?
Multiple of 8: 8, 16, 24
Multiple of 8 (-3): 5, 13, 21
Multiples of 3: 3, 6, 9, 12, 15, 18, 21
21 appears in both the multiples of 8 (-3) and the multiples of 3.
(a) Adam's age this year = 24
(b) Adam's age 6 year ago = 24 - 6 = 18
(c) Adam's age 5 years later = 24 + 5 = 29
Answer(s): (a) 24; (b) 18; (c) 29