A boat whose speed in 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 (in km/hr) is:
Matematika
katadengan
Pertanyaan
A boat whose speed in 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 (in km/hr) is:
1 Jawaban
-
1. Jawaban MrH4Ck
30:15=2
2x9/2=9km/hour