SOLUTION: Steve and Bart sell cars for KC Complete Auto. Over the past year, they sold 640 cars. Assuming Steve sells 3 times as many as Bart, how many cars did Steve sell? A. 480 B. 180

Algebra ->  Customizable Word Problem Solvers  -> Finance -> SOLUTION: Steve and Bart sell cars for KC Complete Auto. Over the past year, they sold 640 cars. Assuming Steve sells 3 times as many as Bart, how many cars did Steve sell? A. 480 B. 180      Log On

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Question 1129595: Steve and Bart sell cars for KC Complete Auto. Over the past year, they sold 640 cars. Assuming Steve sells 3 times as many as Bart, how many cars did Steve sell?
A. 480
B. 180
C. 160
D. 500
A break down and verbal explanation would help a lot.

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Assuming Bart sells x cars, then Steve sells 3x cars
if over the past year, they sold 640 cars, we have

x%2B3x=640
4x=640
x=640%2F4
x=160 ->Bart sells 160 cars
then, 3x=3%2A160=480 Steve sells 480 cars