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At a restaurant, all tips are added together to be split among the employees at the end of a shift. The 4 waiters combined get $$\frac{2}{3}$$ of the money, the manager receives $$\frac{1}{4}$$ and the busboy receives the remainder. If 1 waiter and the busboy together receive $30, how much money was earned in tips for the entire shift?
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以上解析由 考满分老师提供。