Adam's age is a multiple of 8 this year.
His age next year will be multiple of 7.
Adam's age is between 40 and 50.
- What is Adam's age this year?
- What was Adam's age 3 years ago?
- What is Adam's age 10 years later?
Multiple of 8: 8, 16, 24, 32, 40, 48
Multiple of 8 (+1): 9, 17, 25, 33, 41, 49
Multiple of 7: 7, 14, 21, 28, 35, 42, 49
49 appears in both the multiples of 8 (+1) and the multiples of 7.
(a) Adam's age this year = 48
(b) Adam's age 3 years ago = 48 - 3 = 45
(c) Adam's age 10 years later = 48 + 10 = 58
Answer(s): (a) 48; (b) 45; (c) 58