# Math

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5 books and 9 magazines cost \$150.50 dollars altogether. 9 Books and 5 magazines cost \$175.70. How much does 1 book and 1 magazine cost?

• help its urgent -

Its something I need to have.

• Math -

5b+9m=150.5

9b+5m=175.7 if you add them you have one equation.
14b+14m=326.2
14(b+m)=326.2
b+m=23.3
b=23.3-m
sub. this back into one the original equations
9(23.3-m)+5m=175.5
209.7-9m+5m=175.5
-4m=-34.2
m=8.55
Plug that into the other equation
5b+9(8.55)=150.5
5b+76.95=150.5
5b=73.55
b=14.71

• Math -

Thanks!!!!!

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