SOLUTION: Presently, martha is 5 years younger than rita. Martha will , in another 5 years, be twice the age rita was 10 years ago. Calculate rita's age seven years from now

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Question 1140851: Presently, martha is 5 years younger than rita. Martha will , in another 5 years, be twice the age rita was 10 years ago. Calculate rita's age seven years from now
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = Rita's age now
+x+-+5+ = Martha's age now
-----------------------------------
+x+-+5+%2B+5+=+2%2A%28+x+-+10+%29+
+x+=+2x+-+20+
+x+=+20+
and
+x+%2B+7+=+20+%2B+7+
+x+%2B+7+=+27+
In 7 yrs, Rita will be 27
-------------------------------
check:
Martha is +x+-+5+=+15+ now
In 5 yrs, she will be 20
Ten yrs ago, Rita was +20+-+10+=+10+
Martha will be twice that in 5 yrs.
Rita will be +20+%2B+7+=+27+ in 7 yrs
OK