Question

A restaurant uses 80% of its oil in one week. They now have 28 quarts of olive oil left. How do you use a double number line to find the number of quarts the restaurant had at the beginning of the week

Answer 1

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

$100\%-80\%=20\%$

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

$\frac{28}{20\%}=\frac{x}{100\%}\\\\x=100(28)/20\\\\x=140\ quarts$

Complete the double number line attached