X+5=15
-5 -5
X=10
Hope this helps!!
When 36 people are seated the room is 2/3 full.
So for 1/3 , 18 people are needed
It will be 3/3 full if 54 people are present
So there can be 54 people in total
Now for the room to be 1/2 full , people will be 1/2 x 54 = 27 people
14:16 21:24 28:32 are three ratios that are equivalent
