Problema Solution
On Monday, Harold picked up two donuts and three large coffees for the office staff. He paid $4.25. On Tuesday, Melinda picked up three donuts and four large coffees for the office staff. She paid $5.91. What is the cost of one donut? What is the cost of one large coffee?
Answer provided by our tutors
Let
x = donut price
y = coffee price
2 donuts and 3 large coffees cost $4.25
2x + 3y = 4.25
3 donuts and 4 large coffees cost $5.91
3x + 4y = 5.91
We have the following system of equations:
2x + 3y = 4.25
3x + 4y = 5.91
........
click here to see the system of equations solved for x and y
........
x = $0.73
y = $0.93
The cost of one donut is $0.73.
The cost of one large coffee is $0.93.