Answer:
140 quarts of olive oil
Step-by-step explanation:
we know that
A restaurant uses 80% of its oil in one week.
They now have 28 quarts of olive oil left
[tex]100\%-80\%=20\%[/tex]
so
28 quarts of olive oil correspond to the 20%
see the attached figure to better understand the problem
by proportion
Find out the the number of quarts the restaurant had at the beginning of the week (100%)
Let
x ----> the number of quarts the restaurant had at the beginning of the week
[tex]\frac{28}{20\%}=\frac{x}{100\%}\\\\x=100(28)/20\\\\x=140\ quarts[/tex]
Complete the double number line attached
