Question

In the past you paid $800$800 per month to rent your apartment. You now pay $900$900 per month for your rent. What is the percent increase in your rent?

Answer 1

100 more
100/800
1/8
.125
12.5%

Answer 2

The percent increase in your rent is 12.5%. If you do $800 times 12.5% you get $100 and 800+100 is 900. Therefore, the percent increase in your rent is 12.5%. 

Hope this helped you!