"A boatman row 1 km in 5 minute, along the stream and 6 km in 1 hour against the
Channel: Doubtnut
Date: 2020-04-05

"A boatman row 1 km in 5 minute, along the stream and 6 km in 1 hour against the stream. The speed of the stream is
a. 3 kmph b. 6 kmph c. 10 kmph d. 12 kmph"