Question

The average speed of a ship for the first hour of a journey is 32 km/hr. Its average speed for the next 2 hours is 41 km/hr.

Find its average speed for the whole journey.

*Note you do have this formula in your notes from today's lesson*

The average speed for the whole journey was ? km/hr.

Answer 1

37.7 kilometers per hour

Answer 2

37.666 km/hr.

Explanation:

we know the speeds in each hour were:

32 41 41

let's do

41+41+32

=113

113/3

=37.666