The steamer sailed with the current for 1.8 hours, and against the current for 0.9 hours.

The steamer sailed with the current for 1.8 hours, and against the current for 0.9 hours. What distance did the steamer sailed during the entire time if its speed was 28 km, and the speed of the current was 1.6 km. Hour?

1) Let’s calculate the speed of the steamer:
28 + 1.6 = 29.6 km / h – the speed of the steamer along the river;
28 – 1.6 = 26.4 km / h – its speed when moving against the stream of the river.
2) Let’s calculate how many kilometers the steamer covered in 1.8 hours along the river:
29.6 * 1.8 = 53.28 km.
3) Find out which way the steamer covered in 0.9 hours against the river flow:
26.4 * 0.9 = 23.76 km.
4) Determine the entire route of the steamer (upstream and downstream of the river):
53.28 + 23.76 = 77.04 km.
Answer: the entire route of the steamer was 77.04 km.