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Mathematics, 31.12.2019 04:31 dashia84

At a two-day seminar, 90 percent of those registered attended the seminar on the first day. what percent of those registered did not attend the seminar on either day?
(1) a total of 1,000 people registered for the two-day seminar.(2) of those registered, 80 percent attended the seminar on the second day.

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