Question 734813
D=RT
D=18(1-T)
D=6*T
18(1-T)=6T
18-18T=6T
6T+18T=18
24T=18
T=18/24
T=.75 HOURS FOR THE WALK HOME.
1-.75=.25 HOURS FOR THE BIKE RIDE TO THE SHOP.
PROOF:
D=18*.25=4.5 MILES
D=6*.75
D=4.5 MILES.