Question

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

Answer 1

Answer: B. t= 15; s=5

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