Adam's age is a multiple of 7 this year.
His age 3 years ago was a multiple of 4.
- What is Adam's age this year?
- What was Adam's age 6 years ago?
- What is Adam's age 8 years later?
Multiple of 7: 7
Multiple of 7 (-3): 4
Multiple of 4: 4
4 appears in both the multiples of 7 (-3) and the multiples of 4.
Adam's age 3 years ago = 4
(a) Adam's age this year = 7
(b) Adam's age 6 year ago = 7 - 6 = 1
(c) Adam's age 7 years later = 7 + 8 = 15
Answer(s): (a) 7; (b) 1; (c) 15