Author Question: A boat travels upstream and after one hour has gone 10 km. The boat next travels downstream and ... (Read 122 times)

jon_i · **on:** Jul 28, 2018

A boat travels upstream and after one hour has gone 10 km. The boat next travels downstream and after one hour has gone 16 km. If the boat's speed relative to the water is constant, what is the speed of the current in the river?
a. 1 km/h
c. 3 km/h
b. 2 km/h
d. 4 km/h

Question 2

A boat moves through the water in a river at a speed of 8 m/s relative to the water. The boat makes a trip downstream and then makes a return trip upstream to the original starting place. Which trip takes less time?
a. the downstream trip
b. the upstream trip
c. Both trips take the same amount of time.
d. The answer cannot be figured without knowing the speed of the river flow.