Question

A boat whose speed is 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream is ___ km/hr. Type your answer below!

Answer 1

10 km

Explanation:

30+15= 45

4 h 30 min= 4 1/2

45 divide by 4 1/2= 10 km