Adam's age is a multiple of 7 this year.
His age 3 years later will be multiple of 4.
- What is Adam's age this year?
- What was Adam's age 5 years ago?
- What is Adam's age 3 years later?
Multiple(s) of 7: 7, 14, 21
Multiple(s) of 7 (+3): 10, 17, 24
Multiple(s) of 4: 4, 8, 12, 16, 20, 24
24 appears in both the multiples of 4 and the multiples of 7 (+3).
24 is Adam's age 3 years later.
(a) Adam's age this year = 21
(b) Adam's age 5 year ago = 21 - 5 = 16
(c) Adam's age 7 years later = 21 + 3 = 24
Answer(s): (a) 21; (b) 16; (c) 24