Question

6.The Amazon River flows at an average speed of 5 km/hr. If youanda friend decide to drift down the river on a raft, how long will it taketo drift a distance of 16 kilometers? (Express the answer in hours andminutes.)

Answer 1

The drift is the average effect produced by the flowing river on the raft. The product of the velocity and time taken to cross the is equal to the drift produced by the river. From the information given,

drift = 16 km

speed of river = 5 km/h

time required = 16/5 = 3.2 hours

Converting 3.2 hours to hours and minutes,

recall,

1 hour = 60 minutes

0.2 hour = 0.2 x 60 = 12 minutes

Thus, the time required is 3 hours and 12 minutes