Answer:
Each pizza cost $4.50.
Explanation:
p = price of each pizza
l = cost of soda
3p + l = 15.00
l = 1.50 Plug in 1/5 for l in the equation above.
3p + l = 15.00
3p + 1.5 = 15.00 Subtract 1.52 from both sides of the equation
3p = 13.5 Divide both sides by 3
p = 4.50