Adam's age is a multiple of 10 this year.
His age 4 years later will be multiple of 7.
- What is Adam's age this year?
- What was Adam's age 2 years ago?
- What is Adam's age 3 years later?
Multiple(s) of 10: 10
Multiple(s) of 10 (+4): 14
Multiple(s) of 7: 7, 14
14 appears in both the multiples of 7 and the multiples of 10 (+4).
14 is Adam's age 4 years later.
(a) Adam's age this year = 10
(b) Adam's age 2 year ago = 10 - 2 = 8
(c) Adam's age 10 years later = 10 + 3 = 13
Answer(s): (a) 10; (b) 8; (c) 13