SOLUTION: Jeremy's grandfather is four times as old as he is. If you add their ages together, you will get ninety. How old is Jeremy's grandfather? A. 18 B. 19 C. 70 D. 72

Question 1153529: Jeremy's grandfather is four times as old as he is. If you add their ages together, you will get ninety. How old is Jeremy's grandfather?
A. 18
B. 19
C. 70
D. 72
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

let Jeremy's age be
if Jeremy's grandfather is four times as old as he is,grandfather's age is
if the sum of their ages is , we have

->Jeremy's age
Jeremy's grandfather will be
answer:
D.

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