Answer:
(3,60)
Step-by-step explanation:
Marc is walking at a rate of 20 minutes per 1 mile; therefore, at that rate he can walk 3 miles in 60 minutes.
Answer:
think its A
Step-by-step explanation:
Effectively Jock gets 1km further every round of 1:10 hrs. After 8 rounds he has reached 8km (after just having floated back from 9 to 8). The next round he completes the journey without floating.
So total 9 hours of swim and 8*10 minutes of float, that's 10 hours and 20 minutes.