In a steady-flowing river, a boat goes a certain distance upstream at a speed of 12 km/h and comes back the same distance at 24 km/h. Find the average speed for the total journey.

In a steady-flowing river, a boat goes a certain distance upstream at

1.	In a steady-flowing river, a boat goes a certain distance upstream at a speed of 12 km/h and comes back the same distance at 24 km/h. Find the average speed for the total journey.
A.	15 km/h
B.	16 km/h
C.	18 km/h
D.	20 km/h
Answer» C. 18 km/h

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In a steady-flowing river, a boat goes a certain distance upstream at a speed of 12 km/h and comes back the same distance at 24 km/h. Find the average speed for the total journey.

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