On 9/6/2003 6:04:23 PM, mustang1 wrote:
>Sally travels by car from one
>city to another. She drives
>for 31.5 min at 81.8 km/h,
>14.0 min at 102 km/h, and 52.2
>min at 53.8 km/h, and she
>spends 23.9 min eating lunch
>and buying gas.
>Find the average speed for the
>trip. Answer in units of km/h.
I've asked you this same question yesterday:
So how far does Sally travel in 31.5 min at 81.8 km/h plus 14 min at 102 km/h plus 52.2 min at 53.8 km/h?
Did you get an answer? if so, you should be able to divide the distance by the total time for the trip, which now includes the stops.