Adam's age is a multiple of 8 this year.
His age next year will be multiple of 11.
Adam's age is between 30 and 40.
- What is Adam's age this year?
- What was Adam's age 10 years ago?
- What is Adam's age 10 years later?
Multiple of 8: 8, 16, 24, 32
Multiple of 8 (+1): 9, 17, 25, 33
Multiple of 11: 11, 22, 33
33 appears in both the multiples of 8 (+1) and the multiples of 11.
(a) Adam's age this year = 32
(b) Adam's age 10 years ago = 32 - 10 = 22
(c) Adam's age 10 years later = 32 + 10 = 42
Answer(s): (a) 32; (b) 22; (c) 42