Question

The ratio of the heights of two trees is 7:5. If the first tree is 210 feet tall, what is the height of the second tree?

Answer 1

The height of the second tree is 150ft.

Explanation:

Well you have to set it up as a proportion, so

7 = 210

5 = x

Then you cross multiply, 7 times x is 7x, and 210 times 5 is 1050.

Now you have 7x = 1050

Then you divide 1050 and 7x by 7.

And the final answer is x = 150ft