Answer:
25
Step-by-step explanation:
Since y varies inversely with x, the relation between y and x will be:
[tex]y \propto \frac{1}{x}[/tex]
Introducing the proportionality constant, we can write:
[tex]y = \frac{k}{x}[/tex]
Using the first set of given values of x and y, we get:
[tex]50=\frac{k}{10}\\\\k = 500[/tex]
This means, the relation between y and x is:
[tex]y = \frac{500}{x}[/tex]
We have to find y if x = 20. Using this value in above equation, we get:
[tex]y=\frac{500}{20} \\\\ y = 25[/tex]
Thus y would be 25 if x is 20.
