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April 23, 2014

April 23, 2014

Posted by **Judy** on Tuesday, April 27, 2010 at 11:03am.

A bus driver runs a round trip route between 3 cities. It takes 5 hrs for the 400 km trip to the first city. Reloading the bus takes 30 minutes. On the road again, it takes 3 hrs 15 min to get to the second city, which is 220 km away. After a 1 1/4 hr supper, he drives back to his home city which is 280 km away in 4 hrs. What average speed did he have for the day's drive?

- science -
**DrBob222**, Tuesday, April 27, 2010 at 11:20amAdd distances together.

Add times together.

average rate = total distance/total time. The problem says not to count the time not driving.

- science -
**Judy**, Tuesday, April 27, 2010 at 11:31amWhat is the average speed for 913.15?

A. 69.6km/h

B. 73.5km/h

C. 75 km/h

D. 76.5km/h

- science -
**Judy**, Tuesday, April 27, 2010 at 11:47amWhat is the average speed for 913.15?

A. 69.6km/h

B. 73.5km/h

C. 75 km/h

D. 76.5km/h

- science -
**Judy**, Tuesday, April 27, 2010 at 11:50amWhat is the average speed for 913.15?

A. 69.6km/h

B. 73.5km/h

C. 75 km/h

D. 76.5km/h

- science -
**DrBob222**, Tuesday, April 27, 2010 at 12:52pmAverage speed for 913.5 WHAT? And is there more to the problem than that or it an extension of the first problem? If so, how?

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