Eileen drove for 85 minutes. this is 21 more minutes than one third the number of minutes ethan drove. how do i put this into an equation?

So let's start out by labeling Ethan as X

Since 85 is 1/3 of what Ethan drove, that means Ethan drove 3 times of 85.

85= (3x) -21                                 
85 -21 = 3x
60=3x
20 = x 

5/8 beds for each square yard