A boy can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is ?
A. 2 kmph
B. 1.8 kmph
C. 1.5 kmph
D. 2.2 kmph
Answer:C
A boy can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is ?
A. 2 kmph B. 1.8 kmph C. 1.5 kmph D. 2.2 kmph