Answer: A. 4
Im in high school this is simple math so. Your welcome
It took them 4 days to install 480 chairs which means if they were working at a constant rate they got 120 chairs installed daily. with 360 chairs left that means in 3 days they will finish. so overall, it took the workers 7 days to finish, or a week.
75*.2=15
you would save $15
hope that helps
Nine million, four hundred thousand, twenty three9