Answer:
She used 67/60 of a bag of gravel in one day.
Step-by-step explanation:
We must get a common denominator so we can add the two fractions.
Let's use 60!
1/5 = 12/60
11/12 = 55/60
Now we can add and get 67/60!
She used 67/60 of a bag of gravel in one day.