A florist in New York City is designing 350 bouquets per hour. A distribution company is requesting 4000 bouquets to distribute to grocery stores a day. This demand is spread out uniformly from 7 am to 4 pm. The Florist start to prepare bouquets at 6 am, but the first truck will come sharp at 7 am. During the day, the Florist will receive 10 tracks in total. If no bouquets are available, trucks will wait until enough bouquets are designed to satisfy their requests. At 6 am, the Florist has 200 bouquets in inventory. After all, the truck left, the Florist kept designing until the bouquet's inventory had been restored to 200 for the next day.

a) When will the trucks have to start waiting for their request to be filled? b) At what time does the truck stop waiting? c) When can Florist replenish 200 bouquets in their inventory for the next-day distribution? (Round your answer for a whole hour, Ex. if your answer comes up at 7:35 pm, say at 8 pm)