SOLUTION: greg's father is 30 years older than greg. In 15 years, the sum of their ages willbe 130. what are their ages now?

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Question 173844: greg's father is 30 years older than greg. In 15 years, the sum of their ages willbe 130. what are their ages now?
Answer by jojo14344(1513) About Me  (Show Source):
You can put this solution on YOUR website!

Let known of the following:
x= Greg's age
x%2B30= Greg's father's age
Then in 15 yrs,
x%2Bhighlight%2815yrs%29%2Bx%2B30%2Bhighlight%2815yrs%29=130yrs, working eqn
2x%2B60=130
2x=130-60=70------->cross%282%29x%2Fcross%282%29=cross%2870%2935%2Fcross%282%29
highlight%28x=35yrs%29, Greg's age
35%2B30=highlight%2865%29, greg's father's age
In doubt? Let's go back working eqn:
35%2B15%2B65%2B15=130
130yrs=130yrs
Thank you,
Jojo