If a boat goes a certain distance at 30 km/h and comes back the same distance at 20 km/hr, what is the average speed (in km/hr) for the totalÂ journey?

If a boat goes a certain distance at 30 km/h and comes back the same d

1.	If a boat goes a certain distance at 30 km/h and comes back the same distance at 20 km/hr, what is the average speed (in km/hr) for the totalÂ journey?
A.	25
B.	24.5
C.	24
D.	25.5
Answer» D. 25.5

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If a boat goes a certain distance at 30 km/h and comes back the same distance at 20 km/hr, what is the average speed (in km/hr) for the totalÂ journey?

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