There are tourists queuing up before the ticket check in an exposition, assuming that the number of tourists coming in the same time is the same. From the start of ticket checking to the disappearance of the line waiting for ticket checking, the original plan was to open 6 ticket gates at the same time, but actually 7 ticket gates were opened at the same time, which saved 6 minutes compared to the original plan. The planners calculated that if 8 ticket gates were initially opened, 10 minutes would be saved compared to the original plan. In this way, when the line waiting for the ticket check disappears, in order to keep no tourists waiting in front of the ticket gate, at least how many ticket gates should be opened.
某博览会在检票前就有游客开始排队，假设在相等的时间里前来的游客人数一样多．从开始检票到等候检票的队伍消失，原计划同时开6个检票口，实际同时开了7个检票口，这样比原计划节省了6分钟．策划人员测算出，如果最初开8个检票口，将会比原计划节省10分钟．这样，当等候检票的队伍消失后，为了保持检票口前始终没有等候的游客，应该至少开设多少个检票口．
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