Question

please answer someone...
..

Answer 1

As a and b varies inversely

let a= k/b

So ab = k

put a = 90, b = 2

So 90× 2 = k

180 = k

Now

as a= 6, b = q

and ab = k

6q = k = 180

q = 30

Now
as a = p, b = 5

ab = 180

5p = 180

p = 36

So ( p +q)/2 = ( 36 + 30)/ 2 = 66/2 = 33