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 9 sitting chairs, how many chairs would have been still empty if everyone in the hall was sitting?
A) 15 B) 12 C) 18 D) 10
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18...
Because if their 9/13 chairs in total and the first people are 7/9
And that will bring to u as something 2/4...
And again the question says 28 are still empty and 9sitting chairs...
1/2*28+9=23..
And 23+5= 28...
And 28-10=18....
Because if their 9/13 chairs in total and the first people are 7/9
And that will bring to u as something 2/4...
And again the question says 28 are still empty and 9sitting chairs...
1/2*28+9=23..
And 23+5= 28...
And 28-10=18....
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