SOLUTION: in a stream running at 2 km per hour, a motor boat goes 6 km up stream back again to the starting point in 33 minutes. what is the speed of the motor boat in still water?
a) 20
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Question 293837: in a stream running at 2 km per hour, a motor boat goes 6 km up stream back again to the starting point in 33 minutes. what is the speed of the motor boat in still water?
a) 20 km per hour
b) 18 km per hour
c) 22 km per hour
d) 24 km per hour
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
r*t=d
(b+s)*t=(b-s)*(33-t)
(b+2)*t=6
6=(b-2)*(33/60-t)
b=22 t=1/4
c)22 kph
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