Question 1
A hiker travels from A to B by going 600 m uphill, then 720 m downhill, and then 1200 m on level ground. The trip from A to B takes 1 hour 40 minutes, and the return trip from B to A takes 1 hour 41 minutes. The speed on level ground is 30 m per minute. What are the uphill and downhill speeds, respectively?
Original printed choices: A) 24 m/min and 20 m/min; B) 48 m/min and 30 m/min; C) 48 m/min and 24 m/min; D) 24 m/min and 30 m/min; E) 30 m/min and 12 m/min
Editorial task: Solve the literal problem, identify the source discrepancy, and explain any intended correction.
Original printed choices: A) 24 m/min and 20 m/min; B) 48 m/min and 30 m/min; C) 48 m/min and 24 m/min; D) 24 m/min and 30 m/min; E) 30 m/min and 12 m/min
Editorial task: Solve the literal problem, identify the source discrepancy, and explain any intended correction.