SOLUTION: 1. Sally is 3 times as old as John. 8 years from now, Sally will be twice as old as John. How old is John? I'm having trouble with the equation.

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Question 1079093: 1. Sally is 3 times as old as John. 8 years from now, Sally will be twice as old as John. How old is John?

I'm having trouble with the equation.
Found 2 solutions by josgarithmetic, jorel1380:
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
s and j, for Sally's and John's ages now

system%28s=3j%2Cs%2B8=2%28j%2B8%29%29----literal translation of the description

3j%2B8=2%28j%2B8%29-----simple substitution;
solve this for j...

Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
Let j and 3j be John and Sally,respectively. Then:
3j+8=2(j+8)
3j+8=2j+16
j=8
John is 8; Sally is 24. ☺☺☺☺