It would take 7:30 minutes to clear the rest of the 10 miles.
Answer:
B 84 cm^2 is the surface area of tbe prism
0.7 is 0.07 times ten, and 0.7 times 10 is 7 :)
Distance between two skaters=40
difference in speed=2 m/sec
time=distance/time
=40/2
20 seconds