Question

if x andy vary inversely and x=3/5 and y=5/9 find the value of x when y=5/4.​

Answer 1

y∝(1÷x)

y=(k÷x)    -(1)

5/9=5k/3

k=1/3

Hence eq (1) becomes

y=1/3x

x=1/3y

x=4/15