To determine how much Mario spent on golfing, we need to figure out the amount for the missing entry based on the known total spent and the other expenditures he recorded.
Given:
- The total amount Mario spent is \[tex]$87.33.
- The known expenditures are:
- Oil change: \$[/tex]18.95
- Gas in car: \[tex]$20.50
- Lunch out: \$[/tex]12.68
First, we add up the known expenditures:
[tex]\[ \text{Total of known expenditures} = \$18.95 + \$20.50 + \$12.68 \][/tex]
Let's add these amounts step-by-step:
[tex]\[ \$18.95 + \$20.50 = \$39.45 \][/tex]
[tex]\[ \$39.45 + \$12.68 = \$52.13 \][/tex]
So, the total of the known expenditures is \[tex]$52.13.
Next, to find out how much Mario spent on golfing, we subtract the total of the known expenditures from the total amount spent:
\[ \text{Amount spent on golfing} = \text{Total spent} - \text{Total of known expenditures} \]
\[ \text{Amount spent on golfing} = \$[/tex]87.33 - \[tex]$52.13 \]
Subtracting these values:
\[ \$[/tex]87.33 - \[tex]$52.13 = \$[/tex]35.20 \]
Therefore, Mario spent \[tex]$35.20 on golfing. So the correct answer is:
a. \$[/tex]35.20
