First let's find out how much it takes to shear one sheep.
Do a proportion
3/5 = x/60 (1 hour= 60 mins)
Cross multiply and divide
60 x 3= 180
180 divided by 5 is 36
So it takes her 36 minutes for one sheep
36 x 4= 144
144 divided by 60
Answer would be 2 hours and 24 minutes
