Adam's age is a multiple of 5 this year.
His age 3 years ago is a multiple of 8.
Adam's age is between 30 and 40.
- What is Adam's age this year?
- What is Adam's age 3 years ago?
- What is Adam's age 5 years later?
Multiple of 5: 5, 10, 15, 20, 25, 30, 35
Multiple of 5 (-3): 2, 7, 12, 17, 22, 27, 32
Multiples of 8: 8, 16, 24, 32
32 appears in both the multiples of 5 (-3) and the multiples of 8.
(a) Adam's age this year = 35
(b) Adam's age 3 year ago = 35 - 3 = 32
(c) Adam's age 5 years later = 35 + 5 = 40
Answer(s): (a) 35; (b) 32; (c) 40