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Question

On the first day of a two day meeting, the number of male teachers who attended was 700 more than the number of female teachers. On the second day, the number of male teachers who attended was 10% lower and the number of female teachers 5% higher than on the previous day. It there were a total of 1995 teachers present on the second day, how many teachers were present on the first day?

Answer

100M – 100F = 700

900M – 900F = 6300 ….. (1)

 

90M + 105F = 1995

900M + 1050F = 19950 ….. (2)

 

(2) – (1) 

1950F = 13650

1F = 7 

100F = 700

100M = 100F + 700 = 1400

There were 2100 teachers on the first day.

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