Question

At noon, a tank contained 8 cm of water. After several hours, it contained 2 cm of water. What is the percent decrease of water in the tank?

The percent decrease of water in the tank is____%.

Answer 1

The percent decrease of water in the tank is calculated by subtracting the new water level from the original, dividing by the original level, and then multiplying by 100. In this case, the decrease from 8 cm to 2 cm results in a 75% decrease.

Step-by-step explanation:

To calculate the percent decrease of water in the tank, you will need to follow a few simple steps. First, you need to determine the amount of decrease, which is the original amount minus the new amount. Then, you divide the decrease by the original amount, and finally, you multiply by 100 to get the percent change.

In this case, the original amount of water in the tank was 8 cm and it decreased to 2 cm. Therefore, the decrease is 8 cm - 2 cm = 6 cm. Dividing the decrease by the original amount gives us 6 cm / 8 cm = 0.75. To find the percent, we then multiply by 100, yielding a percent decrease of 0.75 x 100 = 75%.

So, the percent decrease of water in the tank is 75%.