Answer:
the answer is 50
Step-by-step explanation:
if she does 150 square feet every 3 hour
you need the 3 hours down to 1 so in order to do that
you need to divide 3 by 3
what you do to one side must be done to the other
150 by 3
so it will look like
3/3 = 150/3
1 = 50
