Question 9
A steamer travels 16.62 km downstream in 45 minutes and 14.4 km upstream in 48 minutes. What is the current’s speed, if the boat’s speed in still water is constant?
Original printed choices: A) 40.16 km/h; B) 20.08 km/h; C) 22.08 km/h; D) 18.16 km/h; E) 22.16 km/h
Editorial task: Calculate the requested current speed and explain whether a printed choice answers the question.
Original printed choices: A) 40.16 km/h; B) 20.08 km/h; C) 22.08 km/h; D) 18.16 km/h; E) 22.16 km/h
Editorial task: Calculate the requested current speed and explain whether a printed choice answers the question.