Question

If Y is directly proportional to 1/Xand ,X=2when Y =20 what is the value of X and Y= 1.25

Answer 1

Y is directly proportional to 1/x

X×y= k (where k is constant)

So, for x= 2 and y=20

K=xy

K=2×20

K = 40 ------------(1)

Now,
For y= 1.25

K= 1.25x. ------------(2)

From equation (1) and (2)

40 = 1.25x

X = 40 / 1.25
= 32.