SOLUTION: An auto travels at a rate of 25.0 km/hr for 4.00 minutes, then at 50.0 km/hr for 8.00 minutes, and finally at 20.0 km/hr for 2.00 minutes. Find the total distance covered in km and

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: An auto travels at a rate of 25.0 km/hr for 4.00 minutes, then at 50.0 km/hr for 8.00 minutes, and finally at 20.0 km/hr for 2.00 minutes. Find the total distance covered in km and      Log On

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Question 1053777: An auto travels at a rate of 25.0 km/hr for 4.00 minutes, then at 50.0 km/hr for 8.00 minutes, and finally at 20.0 km/hr for 2.00 minutes. Find the total distance covered in km and the average speed for the complete trip in m/s.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+25%2A%284%2F60%29+%2B+50%2A%288%2F60%29+%2B+20%2A%282%2F60%29+
+100%2F60+%2B+400%2F60+%2B+40%2F60+
+%28+1%2F60+%29%2A%28+100+%2B+400+%2B++40+%29+
+540%2F60+=+9+
The total distance covered is 9 km
--------------------------------
Find the total time
+4%2F60+%2B+8%2F60+%2B+2%2F60+=+14%2F60+
The average speed is:
+9+%2F+%28+14%2F60+%29+=+9%2A%28+60%2F14+%29+
+540%2F14+=+38.57+
38.57 km/hr