Adam's age is a multiple of 12 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 4 years ago?
- What is Adam's age 3 years later?
Multiple of 12: 12, 24, 36, 48
Multiple of 12 (+1): 13, 25, 37, 49
Multiple of 7: 7, 14, 21, 28, 35, 42, 49
49 appears in both the multiples of 12 (+1) and the multiples of 7.
(a) Adam's age this year = 48
(b) Adam's age 4 years ago = 48 - 4 = 44
(c) Adam's age 3 years later = 48 + 3 = 51
Answer(s): (a) 48; (b) 44; (c) 51