Question

calculate the percent change in the water bill from august to september. round to the nearest whole percent.

expense	august	september
water	$48.00	$36.00
groceries	$150.00	$165.00
restaurant	$80.00	$96.00

Explanation:

Step1: Identify old and new values

Old value (August water bill) = $48.00, New value (September water bill) = $36.00

Step2: Calculate change amount

Change amount=$48 - 36=12$

Step3: Calculate percent - change

Percent change = $\frac{\text{Change amount}}{\text{Old value}}\times100=\frac{12}{48}\times 100 = 25$
Since the new value is less than the old value, it is a 25% decrease.

Answer:

25% decrease