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Calculate the percent change in the water bill from June to July.

\begin{tabular}{|l|r|r|}
\hline
\multicolumn{1}{|c|}{Expense} & \multicolumn{1}{c|}{June} & \multicolumn{1}{c|}{July} \\
\hline
Electricity & [tex]$\$[/tex] 110.00[tex]$ & $[/tex]\[tex]$ 115.00$[/tex] \\
\hline
Water & [tex]$\$[/tex] 40.00[tex]$ & $[/tex]\[tex]$ 34.00$[/tex] \\
\hline
Groceries & [tex]$\$[/tex] 100.00[tex]$ & $[/tex]\[tex]$ 82.00$[/tex] \\
\hline
Restaurant & [tex]$\$[/tex] 54.00[tex]$ & $[/tex]\[tex]$ 54.00$[/tex] \\
\hline
\end{tabular}

[tex]\[
\text{Percent change:} \, ([?] \%)
\][/tex]

Round to the nearest whole percent.

Sagot :

To find the percent change in the water bill from June to July, we follow these steps:

1. Identify the initial and final values:
- The water bill for June is \[tex]$40.00. - The water bill for July is \$[/tex]34.00.

2. Calculate the change in value:
- The change in the water bill is [tex]\( \$34.00 - \$40.00 = -\$6.00 \)[/tex].

3. Determine the percent change:
- Percent change is calculated using the formula:
[tex]\[ \text{Percent Change} = \left( \frac{\text{Change in Value}}{\text{Initial Value}} \right) \times 100 \][/tex]
- Plugging in our values:
[tex]\[ \text{Percent Change} = \left( \frac{-6.00}{40.00} \right) \times 100 \][/tex]

4. Simplify the calculation:
- [tex]\(\frac{-6.00}{40.00} = -0.15\)[/tex]
- So,
[tex]\[ \text{Percent Change} = -0.15 \times 100 = -15.0\% \][/tex]

5. Round to the nearest whole percent:
- The percent change calculated is [tex]\(-15.0\%\)[/tex].
- When rounding [tex]\(-15.0\%\)[/tex] to the nearest whole percent, it remains [tex]\(-15\%\)[/tex].

Therefore, the percent change in the water bill from June to July is [tex]\(-15\%\)[/tex].