The motor boat, whose own speed is 9.8 km / h, went 2 hours downstream and 3 hours upstream

The motor boat, whose own speed is 9.8 km / h, went 2 hours downstream and 3 hours upstream. The speed of the river is 2.2 km / h. What way did the motor boat go in these 5 hours?

The solution of the problem:
1. Let’s determine at what speed the motor boat was going down the river flow per hour, if the river flow speed is 2.2 kilometers per hour.
9.8 + 2.2 = 12 kilometers
2. We find what distance the motor boat covered along the river in two hours.
12 * 2 = 24 kilometers
3. Find out the speed of the motor boat against the current of the river.
9.8-2.2 = 7.6 kilometers
4. Let us calculate the distance traveled by a motor boat in three hours against the stream of the river.
7.6 * 3 = 22.8 kilometers
5. Let’s find out which way the motor boat has gone during these 5 hours.
24 + 22.8 = 46.8 kilometers
Answer: The motor boat covered forty-six kilometers and eight hundred meters in five hours.