Subtracting Integers

Finding Juan's Total Profit by Adding and Subtracting

\begin{tabular}{|c|c|c|c|}
\hline & Day 2 & Day 3 & Day 4 \\
\hline Spent & 7 & 12 & 9 \\
\hline Earned & 16 & 22 & 18 \\
\hline
\end{tabular}

Juan ran the lemonade stand for 3 more days after his first day profit of \$12. Each day, he used the money from sales to purchase more lemons, cups, and sugar to make more lemonade. The table shows how much he spent and earned each day.

1. What is the expression needed to find his total profit?
[tex]\[\square\][/tex]

2. What was his total profit?
[tex]\[\square\][/tex]



Answer :

Let's solve the problem step-by-step to find Juan's total profit.

1. Initial Profit on the First Day:
Juan makes a profit of [tex]$12 on the first day. So we start with this initial profit: \[ \text{Profit on Day 1} = \$[/tex]12
\]

2. Money Spent over the Next Three Days:
According to the table, Juan spent the following amounts over the next three days:
- Day 2: \[tex]$7 - Day 3: \$[/tex]12
- Day 4: \[tex]$9 To find the total amount spent over these three days, we add these amounts together: \[ \text{Total Spent} = 7 + 12 + 9 = \$[/tex]28
\]

3. Money Earned over the Next Three Days:
According to the table, Juan earned the following amounts over the next three days:
- Day 2: \[tex]$16 - Day 3: \$[/tex]22
- Day 4: \[tex]$18 To find the total amount earned over these three days, we add these amounts together: \[ \text{Total Earned} = 16 + 22 + 18 = \$[/tex]56
\]

4. Profit from the Next Three Days:
To find the profit from days 2, 3, and 4, we subtract the total amount spent from the total amount earned:
[tex]\[ \text{Profit from Days 2 to 4} = \text{Total Earned} - \text{Total Spent} = 56 - 28 = \$28 \][/tex]

5. Total Profit Including the First Day:
To find Juan's total profit over all four days, we add the initial profit from the first day to the profit from the next three days:
[tex]\[ \text{Total Profit} = \text{Profit on Day 1} + \text{Profit from Days 2 to 4} = 12 + 28 = \$40 \][/tex]

### Summary
- Expression to find total profit: [tex]$\$[/tex]12 + (\[tex]$56 - \$[/tex]28)[tex]$ - Total Profit: $[/tex]\[tex]$40$[/tex]

So, Juan's total profit over the four days is [tex]\(\$40\)[/tex].