Thank you, CPhill!

Also, isn't 30+75=105 percent. What should we do with the 5%?

Thanks! So, we only need that info. But, does that go under the column both?

One more question: If they asked the number of students who didn't take any classes, what would the answer be?

Yes! Thank you! It is 14, right?

Oh, I get it! Just have to look at the denominator! Thank you, CPhill!

Thank you, CPhill! I understand better now!

Remember that length*width=area, so 1 1/2*x=1 4/5. Try to solve for x!

Exactly! Thanks, CPhill!

Thank you, guys! I understand now!