7/9 of the people present in a hall are sitting in 9/13 of the chairs – McqOptions

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1.	7/9 of the people present in a hall are sitting in 9/13 of the chairs available and the rest are standing. If there are 28 empty chairs, how many chairs would have been still empty if everyone in the hall was sitting?
A.	15
B.	12
C.	18
D.	10
Answer» E.

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