Polar ice is about 3/4 of the 3% of Earth's fresh water. What fraction of all of Earth's water is polar ice?

Are you including all the water, including salt water? Or are you just looking for the fraction of fresh water?

Yes all water

(3/4) * (3/100) = 9/400

To find the fraction of all of Earth's water that is accounted for by polar ice, we need to calculate the fraction of polar ice out of the total amount of water on Earth.

First, let's determine the fraction of Earth's fresh water that is polar ice. We are given that polar ice is about 3/4 of the 3% of Earth's fresh water. So, we multiply the two fractions:

(3/4) * (3/100) = 9/400

Therefore, polar ice accounts for 9/400 of Earth's fresh water.

Now, we need to determine the fraction of all of Earth's water that is polar ice. To do this, we'll consider the fact that only about 2.5% of Earth's total water is fresh water, while the remaining 97.5% is saltwater.

So, the fraction of all of Earth's water that is polar ice can be calculated by multiplying the fraction of Earth's fresh water that is polar ice by the fraction of total water that is fresh water:

(9/400) * (2.5/100) = 9/16,000

Therefore, polar ice represents 9/16,000 of all of Earth's water.

To summarize, the fraction of all of Earth's water that is accounted for by polar ice is 9/16,000.