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A clothing store sells T-shirts, t, for $8 a shirt, and shorts, s, for $12 each. The
store earned $180 revenue last month. The store sold three times as many T-
shirts as shorts. Using the method of substitution, how many T-shirts and
shorts did the store sell?
A. t= 8; s = 12
B. t= 15; s=5
OC. t= 5; s = 15
OD. t = 12; s = 8

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Respuesta :

Heather

Answer: B. t= 15; s=5

Step-by-step explanation:

We will create a system of equations.

    8t + 12s = 180

    t = 3s

Next, we will substitute this value of t into the first equation and solve for s.

    8t + 12s = 180

    8(3s) + 12s = 180

    24s + 12s = 180

    36s = 180

    s = 5 shirts

Lastly, we will substitute this value of s back into t = 3s and solve for t.

    t = 3s

    t = 3(5)

    t = 15 shirts

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