SOLUTION: The current ages of Jimmy and Stephen are in the ratio 3:5. Eight years from now the ratio of their ages will be 7:9. Find their current ages.

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Question 965060: The current ages of Jimmy and Stephen are in the ratio 3:5. Eight years from now the ratio of their ages will be 7:9. Find their current ages.
Answer by Fombitz(32388) About Me  (Show Source):
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J%2FS=3%2F5
5J=3S
.
.
.
%28J%2B8%29%2F%28S%2B8%29=7%2F9
9%28J%2B8%29=7%28S%2B8%29
9J%2B72=7S%2B56
9J-7S=-16
27J-21S=-48
From above,
35J=21S
Substituting,
27J-35J=-48
-8J=-48
J=6
.
.
5%286%29=3S
3S=30
S=10