Greg will be x and Greg's father will be x + 30. In 15 years Greg will be x + 15 and Greg's father will be x + 30 + 15 or x + 45, and the sum of their ages will be 130.
So,
x + 15 + x + 45 = 130
2x + 60 = 130
2x = 130 - 60
2x = 70
x = 70/2
x = 35 which is Greg's current age. Greg's father is 35 + 30 or 65 years old. Just to check add 15 years or 30 total to their ages. 35 + 65 + 30 = 130
Thursday, March 20, 2008
Age Problem 3 Solution
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