SOLUTION: A person travels by car from one city to another. She drives for 31.3 min at 78.3 km/h, 10.6 min at 113 km/h, 49.1 min at 32.6 km/h, and spends 14.9 min along the way eating lu

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: A person travels by car from one city to another. She drives for 31.3 min at 78.3 km/h, 10.6 min at 113 km/h, 49.1 min at 32.6 km/h, and spends 14.9 min along the way eating lu      Log On

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Question 988200: A person travels by car from one city to another.
She drives for 31.3 min at 78.3 km/h,
10.6 min at 113 km/h, 49.1 min at 32.6 km/h,
and spends 14.9 min along the way eating
lunch and buying gas Determine the distance between the cities
along this route.
Answer in units of km

Found 2 solutions by solver91311, macston:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Distance equals rate times time. For each of your given rates and times, calculate the distance represented. The total distance is the sum of all your calculated distances. The 14.9 minutes getting gas and eating is a red herring; it has nothing to do with your final answer since the distance traveled at 0 kilometers per hour for any amount of time is still 0 kilometers.

John

My calculator said it, I believe it, that settles it

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
%2878.3km%2Fhr%29%281hr%2F60min%29%2831.3min%29=40.85km
%28113km%2Fhr%29%281hr%2F60min%29%2810.6min%29=19.96km
Total Distance= 40.85km+19.96km = 60.81 kilometers
Total Time=31.3min+10.6min+14.9min=56.8 min
Average_speed=%2860.81km%2F56.8min%29%2860min%2F1hr%29=64.24km/hr