A construction company can remove 2/3 tons of dirt from a construction site each hour. How long wil

A construction company can remove 2/3 tons of dirt from a construction site each hour. How long will it take them to remove 30 tons of dirt from the site?

Let h be the number of hours. We have the following equation:
2/3h = 30

Multiply each side by 3:
2(3)h/3 = 30 * 3

Cancel the 3 on the left side:
2h = 90

Type 2h = 90 into the search engine, we get h = 45.