Question

You can buy 3 t-shirts for 24. Write a proportion that gives the cost c of buying 7 t-shirts.

Answer 1

3/24 = 7/x

Solving:
Use cross multiplication

3x = 168

Isolate x by dividing 3 from both sides:

x= $56

Answer 2

If..... 3t=24, then t=8. So, therefore 7t= 56 and t=8