SOLUTION: Brianna’s SUV gets 22 mpg in the city and 30 mpg on the highway. The amount of gas she uses A (in gal) is given by A=1/22c+1/30h , where c is the number of city miles and h is

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Brianna’s SUV gets 22 mpg in the city and 30 mpg on the highway. The amount of gas she uses A (in gal) is given by A=1/22c+1/30h , where c is the number of city miles and h is       Log On

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Question 1095805: Brianna’s SUV gets 22 mpg in the city and 30 mpg on the highway. The amount of gas she uses A (in gal) is
given by
A=1/22c+1/30h
, where c is the number of city miles and h is the number of highway miles driven. If
Brianna drove 165 miles on the highway and used 7 gal of gas, how many city miles did she drive?

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+A+=+%28+1%2F22+%29%2Ac+%2B+%28+1%2F30%29%2Ah+
given:
+7+=+%28+1%2F22+%29%2Ac+%2B+%28+1%2F30+%29%2A165+
+7+=+%28+1%2F22+%29%2Ac+%2B+5.5+
+%28+1%2F22+%29%2Ac+=+1.5+
+c+=+33+
She drove 33 city miles