Problema Solution
At homecomIngdootball games,the senior class officers sold slices of pizza for .75 each and hamburger for 1.35 each. They sold 40 more slices of pizza than hamburger, and sales totaled 292.50. How many slices of pizza did they sell?
Answer provided by our tutors
Let the number of slices of pizza sold be x.
Let the number of hamburger sold be y.
They sold 40 more slices of pizza than hamburger: x = y + 40
sales totaled 292.50: .75x + 1.35y = 292.5
Substitute equation 1 in equation 2:
.75(y +40) + 1.35y = 292.5
.75y + 30 + 1.35y = 292.5
2.1y = 262.5
y = 125
So x = y+ 40 = 165
Answer: 165