If 9 students make the poster in 10 hours Then it would take 1 student 90 hours to make 1 poster Therefore you do 90 hours/6hours to get 15 So you'd need 15 students to make the poster in 6 hours Which means 6 more students would need to join them
A)24 boards/1 * 47.5 inch/boards * 1 ft/12in = 95 ft. according to dimensional analysis the answer is 95 ft. b) 95/8 is approximately 12 so 12 boards are needed.
