Question 1105441: In three (3) years from now, Jenny’s grandfather will be six (6) times as old as Jenny was last
year. Presently, the sum of Jenny’s age and her grandfather’s age is 68. How old will Jenny and her
grandfather be ten (10) years from now?
Found 2 solutions by josgarithmetic, Boreal:
Answer by josgarithmetic(39617)   (Show Source):
Answer by Boreal(15235)  (Show Source):
You can put this solution on YOUR website! Jenny is x years old now
She was x-1 last year
in 3 years, she will be x+3 years and her grandfather will be 6x-6, since he is 6 times as old as Jenny was last year, when she was (x-1) years.
Now, her grandfather is 6x-9 years old, 3 years less than 6x-6.
x+6x-9=68
7x=77
x=11
Jenny will be 21 10 years from now ANSWER
Her grandfather is 57. He will be 67 10 years from now. ANSWER
3 years from now, her grandfather will be 60, which is 6 tines as old as Jenny was last year.
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