Posted by Eddie (209.234.210.4) on September 10, 2003 at 14:23:37:
My Problem:
You plan a trip on which you want to average 90 km/h. You cover the first half of the distance at an average speed of only 48 km/h. What must your average speed be in the second half of the trip to meet your goal? Note that the velocities are based on half the time not half the velocity.
Please show me how to do this! I don't get it!