Problema Solution
At the park, Joanne and Maria bought food and lemonade for themselves and their friend, Brian. Joanne bought 3 slices of pizza and 1 lemonade for $4.50. Maria bought 2 slices of pizza and 2 lemonades (one for her and one for Brian) for $4.00. How much does Brian owe Maria for his lemonade?
Answer provided by our tutors
let
p = the cost of a slice of pizza
l = the cost of a lemonade
Joanne bought 3 slices of pizza and 1 lemonade for $4.50
3p + l = 4.50
Maria bought 2 slices of pizza and 2 lemonades (one for her and one for Brian) for $4.00
2p + 2l = 4.00 divide both sides by 2
p + l = 2
by solving the system of equations
3p + l = 4.50
p + l = 2
we find
l = $0.75
p = $1.25
click here to see the step by step solution of the system of equations
Brian owes $0.75 to Maria for his lemonade.