Adam's age is a multiple of 8 this year.
His age 5 years ago was a multiple of 3.
- What is Adam's age this year?
- What was Adam's age 9 years ago?
- What is Adam's age 7 years later?
Multiple of 8: 8
Multiple of 8 (-5): 3
Multiple of 3: 3
3 appears in both the multiples of 8 (-5) and the multiples of 3.
Adam's age 5 years ago = 3
(a) Adam's age this year = 8
(b) Adam's age 9 year ago = 8 - 9 = -1
(c) Adam's age 8 years later = 8 + 7 = 15
Answer(s): (a) 8; (b) -1; (c) 15