A supplier for the electronics industry manufactures screens and keyboards and uses 2 plants. Calculate how long each plant will take each plant will take to produce exactly 4000 keyboards and 4000 screens.
Hourly Rates Per Plant:
keyboards screens
Mexico: 40 32
Taiwan 20 32

Question

A supplier for the electronics industry manufactures screens and keyboards and uses 2 plants. Calculate how long each plant will take each plant will take to produce exactly 4000 keyboards and 4000 screens. 
Hourly Rates Per Plant:
                            keyboards      screens
               Mexico: 40                  32
               Taiwan  20                  32

anonymous · Answer

40x+20y=4000
32x+32y=4000
x=75
y=50