A boat sails at a speed of 15 kmph in still waters. It travels 30 km downstream and comes back in four and a half hours. What is the speed of the stream?

A boat sails at a speed of 15 kmph in still waters. It travels 30 km d

1.	A boat sails at a speed of 15 kmph in still waters. It travels 30 km downstream and comes back in four and a half hours. What is the speed of the stream?
A.	5 km/h
B.	6 km/h
C.	25 km/h
D.	50 km/h
Answer» B. 6 km/h

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A boat sails at a speed of 15 kmph in still waters. It travels 30 km downstream and comes back in four and a half hours. What is the speed of the stream?

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