For this case we must make a rule of three to determine the number of pages to finish your work.
12 --------------> 60%
x ----------------> 40%
Where "x" represents the number of pages needed to complete the job:
[tex]x = \frac {40 * 12} {60}\\x = 8[/tex]
So, there are 8 pages left to finish their work. The total number of pages of the work is 20.
Answer:
You need to finish 8 pages out of a total of 20
