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The tollway system tracks the  number of cars to the number of semi i trucks that pay tolls. in june 2013 the ratio of cars to trucks was 7 to 3. if there were 600 more cars than trucks, how many trucks paid a toll in june 2013?

 Oct 22, 2018
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\(\dfrac{c}{t} = \dfrac{7}{3} \\ \dfrac{t+600}{t}=\dfrac 7 3 \\ 3t+1800 = 7t \\ 4t = 1800 \\ t=450\)

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 Oct 22, 2018

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