Question

Nathan ordered one cheeseburger and one bag of chips for 3.75$. Jack ordered two cheeseburgers and three bags of chips for 8.25$

Answer 1

Therefore the cost of a bag of chips is $0.75

therefore the cost of a cheeseburger is $3.

Explanation:

i) let the cost of a cheesburger be x.

ii) let the cost of a bag of chips be y

iii) therefore it is given that x + y = 3.75

iv) it is also given that 2x + 3y = 8.25

v) multiplying the equation in iii) by 2 we get 2x + 2y = 7.50

vi) subtracting the equation in v) from the equation in iv) we get y = $0.75

vii) Therefore the cost of a bag of chips is $0.75

viii) Substituting the value of y found in vii) into iii) we get x = 3.

ix) therefore the cost of a cheeseburger is $3.