Barbarians destroyed a lot of the documentation in 390BC, Historians now are left to piece the puzzle and grasp an understanding based on the evidence left
Work out the time it would take her to complete one problem (time taken ÷ problems done) and then multiply that answer by the total number of problems to work out the total time.
So that would be:
25 minutes ÷ 20 problems = 1.25 problems per minute
1.25 problems per minute × 50 problems total = 62.5 minutes total.
The answer is: B) 62.5 minutes.
The correct answer is D) is a series of rivers and mountains that separates Canada from the US.
The continental divide is a series of rivers and mountains that separates Canada from the US.
A continental divide is the area or the territory that physically divides the rivers' systems of a continent. Let's have in mind that the rivers feed into the sea. For instance, we have the Great Divide in North America that ends in South America. It starts in Alaska, passes through the Rocky Mountains, then through the Sierra Madre Occidental mountain chain in Mexico, and ends in the Andes Mountains of Peru.