She worked 2 and 1/2 hours yesterday, and today she did 4 and 1/4 hours.
first off, let's check how many hours she worked total, and divide 54 by it.
so, first off, let's convert the mixed fractions to "improper" and add them up.

I believe the fourth one is the answer.
Answer:

Step-by-step explanation:

I believe it is c/6. Please correct me if I'm wrong.
Total= number / percent . i think it is 15