Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
If you're not careful, you can make an easy mistake of thinking statements 1 & 2 are equivalents. Statement 1 gives an original amount and annual profit increase (and hence you can calculate the 91 amount) whereas statement 2 only gives the annual profit increase (with no amount).
Man, I have to be careful when rushing through these problems on the test!