Algebra I

Write and solve a system of equations to solve the problem.
At a film festival, Film A is 4 times as long as Film B. Together, the films are 160 min long. How long is each film?

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  1. A = 4 B

    A + B = 160
    _____________

    A + B = 160

    4 B + B = 160

    5 B = 160 Divide both sides by 5

    B = 160 / 5 = 32 min

    A = 4 B = 4 * 32 = 128 min

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  2. Write and solve a system of equations to solve the problem.
    At a film festival, Film A is 4 times as long as Film B. Together, the films are 160 min long. How long is each film?

    AB = 160; 4A = B
    Film A: 40 min, Film B: 120 min

    40 * 4 =160
    120+40=160

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