Question

There is a mid ocean ridge between South America and Africa causing the two continents to drift away from each other. South America and Africa have moved 250 cm away from each other in the last 100 years. What is their average speed?

Answer 1

2.5 cm/year

Explanation:

Just divide the total distance, 250 cm, by the years, 100, 250/100 = 2.5, the rate of the contintents drifting away is 2.5 cm per year, 2.5 cm/year