Adam's age is a multiple of 4 this year.
His age 2 years later will be multiple of 7.
- What is Adam's age this year?
- What was Adam's age 6 years ago?
- What is Adam's age 6 years later?
Multiple(s) of 4: 4, 8, 12
Multiple(s) of 4 (+2): 6, 10, 14
Multiple(s) of 7: 7, 14
14 appears in both the multiples of 7 and the multiples of 4 (+2).
14 is Adam's age 2 years later.
(a) Adam's age this year = 12
(b) Adam's age 6 year ago = 12 - 6 = 6
(c) Adam's age 4 years later = 12 + 6 = 18
Answer(s): (a) 12; (b) 6; (c) 18