Adam's age is a multiple of 3 this year.
His age 4 years later will be multiple of 10.
- What is Adam's age this year?
- What was Adam's age 4 years ago?
- What is Adam's age 8 years later?
Multiple(s) of 3: 3, 6
Multiple(s) of 3 (+4): 7, 10
Multiple(s) of 10: 10
10 appears in both the multiples of 10 and the multiples of 3 (+4).
10 is Adam's age 4 years later.
(a) Adam's age this year = 6
(b) Adam's age 4 year ago = 6 - 4 = 2
(c) Adam's age 3 years later = 6 + 8 = 14
Answer(s): (a) 6; (b) 2; (c) 14