22-05-2016
Mathematics

Answered

how to do do this question I don't know how to do

how to do do this question I don t know how to do class=

Verified Answer :

22-05-2016

Hello,

Let denote
h the number of men in the concert hall (before leaving)
f the number of women in the concert hall (before leaving)

1/5 h quit =60/2
15/100 f =60/2

h=305=150
f=30100/15=200

Tey were 150+200 = 350 humans in the hall.
(why h : homme, f:femme you may call m and w)

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