Question

David is tracking the amount of water he drinks each day.

On Tuesday, he drinks 16 cups of water.
On Wednesday, he drinks 12 cups of water.

What is the percent change in his water intake?

Answer 1

David's water intake decreased by 25% from Tuesday to Wednesday. This was calculated by finding the intake difference of 4 cups, dividing by Tuesday's intake of 16 cups, and then multiplying by 100.

Step-by-step explanation:

Calculating Percent Change in Water Intake

To calculate the percent change in David's water intake from Tuesday to Wednesday, we will use the following steps:

Find the difference in water intake between the two days.

Divide the difference by the initial value (Tuesday's intake).

Multiply the result by 100 to get the percent change.

Now, let's do the calculations:

Difference in water intake = Tuesday’s intake - Wednesday’s intake = 16 cups - 12 cups = 4 cups.

The percent change is calculated as (Difference / Tuesday's intake) x 100 = (4 cups / 16 cups) x 100 = 0.25 x 100.

Percent change = 25%

Therefore, David's water intake decreased by 25% from Tuesday to Wednesday.

Answer 2

The answer would be a 75% change in water intake. An easy way to solve percentage problems like this is to divide the changed value by the original value, in this case it would be 12/16, and if David drank 12 cups on Tuesday but 16 on Wednesday, the equation would instead be 16/12.