Question

if x varies inversly as y^2-1 and is equal to 24 when y=10 , find x when y=5

Answer 1

Since they vary inversely,
x(y^2-1) is constant.... = k
Given,
when y =10, x=24
So, k = 24(99)

Now, when y is 5
Then,
x(24) = 24*99
Hence, x is 99