Awaiter had nine tables he was waiting on, with seven women and three men at each table. how many customees total did the waiter have

Since each table had 7 women and 3 men at each table, that would mean each table has 10 people. Since there are 9 tables he was waiting on, and 10 people at each table, multiply 9 x 10, and you will find that he served 90 people in total.

10 x 9 = 90
there were 90 customers

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