SOLUTION: Mary Beth's age is 3 times the age of her sister Ellen. Ellen is now 4 years old. How old will they both be whe Mary Beth is only twice the age of Ellen?

Question 767663: Mary Beth's age is 3 times the age of her sister Ellen. Ellen is now 4 years old. How old will they both be whe Mary Beth is only twice the age of Ellen?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Mary Beth's age now
Let = Ellen's age now

------------
Let = number of years from now when
Mary Beth is twice Ellen's age

In 4 years, Mary Beth will be twice Ellen's age
check:

16 is twice 8
OK
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