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Together, Jared's age and his grandfather's age total 100. But Jared's grandfather is 70 years older than him. How old is Jared's grandfather?
15 years ago

Answers

Reiny
Jared --- x
grandpa -- x+70

x + x+70 = 100
2x = 30
x = 15

so grandpa is 15+70 = 85
15 years ago

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