solving applications

Algebra
Tutor: None Selected Time limit: 1 Day

A truck can be rented from company A for $90 a day plus $0.20 per mile. Company B charges $40 a day plus $0.70 per mile to rent the same truck . How many miles must be driven in a day to make the rental cost for Company A a better deal than company  B?

For company A to have a better deal, the truck must be driven  more than _  miles per day.

Oct 3rd, 2015

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let total miles driven in a day to make the rental cost for Company A a better deal than company  B

be x.


A for $90 a day plus $0.20 per mile

90 + 0.2 x

B charges $40 a day plus $0.70 per mile to rent the same truck

40 + 0.70 x


solve for x by equating two equations

90 + 0.2 x = 40 + 0.70 x

90 - 40 = 0.70 x - 0.20 x

  50  = 0.50 x

x= 100 miles


answer is

For company A to have a better deal, the truck must be driven  more than  ( 100  )  miles per day.

hope you understood..please message if you have any doubts...thank you
Sep 21st, 2015

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Oct 3rd, 2015
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