Answer:
Here
perimeter=76
length =4a+5
breadth=2a-3
we know,
perimeter=2(length+breadth)
76=2(4a+5+2a-3)
76=2(7a+2)
76=14a+4
76-4=14a
72=14a
72÷14=a
a=5.14
Because the ratio of acceptance is 9:100, we simply multiply both by 2:
9:100 = 18:100
The chances of her admitting the 18th student is Option B., 100%
