The volume of industrial production increased ten times. What was the percent increase?

twice = 100 % increase

three times = 200 % increase
etc
ten times = 900% increase

or 1000 % of original is 900% increase:)

To determine the percent increase, we need to compare the change in volume to the original volume. In this case, we are told that the volume of industrial production increased ten times.

Let's assume the original volume of industrial production was X.

The increased volume can then be calculated as 10X since it has increased ten times.

To find the percent increase, we can use the following formula:

Percent Increase = (Increased Value - Original Value) / Original Value * 100

Substituting the values into the formula:

Percent Increase = (10X - X) / X * 100

Simplifying the formula:

Percent Increase = 9X / X * 100

The X's cancel out:

Percent Increase = 9 * 100

Percent Increase = 900%

Therefore, the volume of industrial production increased by 900%.