SOLUTION: chioma drove her car 8okm in 45mins,then 100km in one hour and finally 120km in 1hr45mins.(a)what is the total time taken in hours?.(b)find her average speed for a whole journey.
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Question 968709: chioma drove her car 8okm in 45mins,then 100km in one hour and finally 120km in 1hr45mins.(a)what is the total time taken in hours?.(b)find her average speed for a whole journey. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! drove her car 8okm in 45mins,then 100km in one hour and finally 120km in 1hr45mins.
(a)what is the total time taken in hours?.
Change the min to hrs, add them up
.75 + 1 + 1.75 = 3.5 hrs total time
:
(b)find her average speed for a whole journey.
Find the total distance. 80 + 100 + 120 = 200 km
Av speed = total dist/total time = 57.143 mph is av speed for the trip
