SOLUTION: Ann's age is seven-tenths of Bills age. In 4 years Ann's age will be eight-elevenths of Bills age. how old is Bill now?

SOLUTION: Ann's age is seven-tenths of Bills age. In 4 years Ann's age will be eight-elevenths of Bills age. how old is Bill now?

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Question 129974: Ann's age is seven-tenths of Bills age. In 4 years Ann's age will be eight-elevenths of Bills age. how old is Bill now?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Ann's age now
Let = Bill's age now

In 4 years Ann will be
In 4 years Bill will be

substitute in the 1st equation for
in the last equation

multiply both sides by

Bill is 40 now
check:

OK
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