Adam's age is a multiple of 10 this year.
His age 6 years ago was a multiple of 2.
- What is Adam's age this year?
- What was Adam's age 6 years ago?
- What is Adam's age 9 years later?
Multiple of 10: 10
Multiple of 10 (-6): 4
Multiple of 2: 2, 4
4 appears in both the multiples of 10 (-6) and the multiples of 2.
Adam's age 6 years ago = 4
(a) Adam's age this year = 10
(b) Adam's age 6 year ago = 10 - 6 = 4
(c) Adam's age 10 years later = 10 + 9 = 19
Answer(s): (a) 10; (b) 4; (c) 19