SOLUTION: The ratio of two numbers is 7 to 9. If the sum of the numbers is 48, find the numbers.

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Question 713615:
The ratio of two numbers is 7 to 9. If the sum of the numbers is 48, find the numbers.
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
7/9=x/y
x+y=48
x=48-y
7/9=(48-y)/y cross multiply.
9(48-y)=7y
432-9y=7y
-9y-7y=-432
-16y=-432
y=-432/-16
y=27 ans.
x=48-27=21 ans.
Proof:
7/9=21/27
7*27=9*21
189=189