1. The distance from school to the

beach is 10 miles. If you bike from school to the beach in 40 minutes, what is your average speed for the trip? What does this mean?

I think the average speed is 15miles/hour.

But what am I suppose to be looking for to answer what does this mean?

2. On the return trip from the beach, you pedal hard for the first ten minutes and cover 4 miles. Tired, you slow down and cover the last 6 miles in 36 minutes. What is your average speed for the return trip?

I got 5/23 miles/min. Is this correct?

Thanks.

Vicky.