Adam's age is a multiple of 8 this year.
His age 7 years ago was a multiple of 7.
- What is Adam's age this year?
- What was Adam's age 3 years ago?
- What is Adam's age 3 years later?
Multiple of 8: 8, 16, 24, 32, 40, 48, 56
Multiple of 8 (-7): 1, 9, 17, 25, 33, 41, 49
Multiple of 7: 7, 14, 21, 28, 35, 42, 49
49 appears in both the multiples of 8 (-7) and the multiples of 7.
Adam's age 7 years ago = 49
(a) Adam's age this year = 56
(b) Adam's age 3 year ago = 56 - 3 = 53
(c) Adam's age 8 years later = 56 + 3 = 59
Answer(s): (a) 56; (b) 53; (c) 59