SOLUTION: it is 185 km from city A to city B. if a bus takes 2 hours to cover the first 85 km, how long must it take to travel the final 100 km in order to average 50 km per hour for the ent

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Question 754630: it is 185 km from city A to city B. if a bus takes 2 hours to cover the first 85 km, how long must it take to travel the final 100 km in order to average 50 km per hour for the entire trip:
A. 60 minutes
B. 75 minutes
C. 102 minutes
D. 112 minutes
Answer by Cromlix(4381) About Me  (Show Source):
You can put this solution on YOUR website!
Set up the equation:-
185km/x = 50km/hr
x = 185/50
x = 3.7hr or 3 hours 42 mins
So he must do the final 100km
in 1hr 42mins or 102 mins (C)
Hope this helps
:-)