Answer: 20
Step-by-step explanation:
Let the total number of pencils that Jackson has be represented by x.
Since 20% of his pencils are broken which equals 4. This can be written and represented in an equation as:
20% of x = 4
20/100 × x = 4
0.2x = 4
x = 4/0.2
x = 20
There are a total of 20 pencils
