Adam's age is a multiple of 8 this year.
His age 6 years ago was a multiple of 10.
- What is Adam's age this year?
- What was Adam's age 5 years ago?
- What is Adam's age 3 years later?
Multiple of 8: 8, 16
Multiple of 8 (-6): 2, 10
Multiple of 10: 10
10 appears in both the multiples of 8 (-6) and the multiples of 10.
Adam's age 6 years ago = 10
(a) Adam's age this year = 16
(b) Adam's age 5 year ago = 16 - 5 = 11
(c) Adam's age 8 years later = 16 + 3 = 19
Answer(s): (a) 16; (b) 11; (c) 19