Question 251938
D=RT
D=4X THE HICKING TRIP.
D=20(18-X) THE TRUCK TRIP.
4X=20(18-X)
4X=360-20X
4X+20X=360
24X=360
X=360/24
X=15 HOURS FOR THE HICKING TRIP.
18-15=3 HOURS FOR THE TRUCK TRIP.
PROOF:
4*15=20*3
60=60