Question

Question 74

Find the values of x and y if a and b are in inverse proportion

Answer 1

In an inverse proportion,
When we multiply the first quantity by any constant k, then th eanother quantity is divided by the same constant k.
Given,

Here, we see that in part (b) when we divide 30 by 6, we will get 5. So in part (a) we will get the value of x .
i.e. x $=12\times 6=72$
Similarly, in part (a) when we divide x i.e. 72 by 9, we will get 8. So in part (b), we will get the values of y.
i.e. y$=5\times 9=45$