Question

A boat traveled 3 hours and covered 90 km. Later that day it was windy and boat slowed so it went another 10 km in 2 hours. Find the average speed of the boat.

Question 2 options:

A: 20 kilometer per hour


B: 25 kilometer per hour


C: 30 kilometer per hour


D: 35 kilometer per hour

Answer 1

The average speed of the boat is 20 km/h.

Step-by-step explanation:

To find the average speed, we need to calculate the total distance traveled and the total time taken.

The boat traveled 90 km in 3 hours, so its speed during this time was 90 km / 3 hours = 30 km/h.

Later, the boat traveled an additional 10 km in 2 hours, so its speed during this time was 10 km / 2 hours = 5 km/h.

To find the average speed, we calculate the total distance traveled (90 km + 10 km = 100 km) and the total time taken (3 hours + 2 hours = 5 hours).

Average speed = total distance / total time = 100 km / 5 hours = 20 km/h.