The crew of a garbage truck takes 5 hours to empty all the bins in one neighborhood on pickup day. The city assigned a second garbage truck to this neighborhood. During their training, it took the crew from the second truck 8 hours to empty all the bins.
A table showing Rate in part per hour, Time in hours, and Part of Bins Emptied. The first row shows First Truck and has, StartFraction 1 Over 5 EndFraction, t, and StartFraction 1 Over 5 EndFraction times t. The second row shows Second Truck and has, StartFraction 1 Over 8 EndFraction, t, and StartFraction 1 Over 8 EndFraction times t.
When the two crews start working together, what part of all the garbage bins will the first garbage truck empty?
0.6
0.5
0.7
0.4