Problema Solution
A logistic company uses two different models of computers in their office. The first model cost $45 to upgrade and the second model cost $30 to upgrade. If the company upgrades 200 computers and it cost $7,125 in total, how many units of each model are ungraded.
Answer provided by our tutors
Let
x = number of units of the first model
y = number of units of the second model
x + y = 200
45x + 30y = 7125
........
click here to see the system of equations solved for x and y
........
x = 75 units of the first model
y = 125 units of the second model
75 units of the first and 125 units of the second model were upgraded.