Gross profit

Joseph sold the following quantities of kerosene in gallons: 3/4, 5/8, 7/8, and 9/10. How many gallons of kerosene did Joseph sell? How much was his gross profit if a gallon costs P28.00 and he sold it at P32.00?

Correct answer:

V =  3.15 gal
p =  12.6 P

Step-by-step explanation:

$V=\frac{3}{4}+\frac{5}{8}+\frac{7}{8}+\frac{9}{10}=\frac{30}{40}+\frac{25}{40}+\frac{35}{40}+\frac{36}{40}=\frac{30+25+35+36}{40}=\frac{126}{40}=\frac{63}{20}\text{gal}=3.15\text{gal}$

$$\begin{gathered} p_0=32.00-28.00=4\text{P/gal} \\ p=p_0\cdot V=4\cdot \frac{63}{20}=\frac{4\cdot 63}{20}=\frac{252}{20}=\frac{63}{5}\text{P}=12.6\text{P} \end{gathered}$$

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