SOLUTION: sally is 12 years old and her uncle mike is 3 times as old. How many years must pass before her uncle mike is only twice as old as sally? how many years ago was uncle mike 7 times

Question 498494: sally is 12 years old and her uncle mike is 3 times as old. How many years must pass before her uncle mike is only twice as old as sally? how many years ago was uncle mike 7 times as old.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
is Mike's age now
Let = number of years from now
when uncle is twice Sally's age
(a)

In 12 years Sally will be 24
In 12 years Uncle will be 48,
twice Sally's age
(b)
Let = number of years ago when Uncle was
7 times as old as Sally

8 years ago, Uncle was
8 years ago, Sally was
Uncle was 7 times her age
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