y=5 when x=20.
Given that, y is inversely proportional to x. When y = 25 , x = 4.
We need to find the y value when x=20.
What is inversely proportional?
Inversely proportional variables or quantities are those in which if one variable increases the other will decrease, and if one variable decreases the other increases.
Now, y∝1/x
⇒y=k/x
⇒25=k/4
⇒k=100
Thus, the y value when x=20.
y=100/20=5
Therefore, y=5 when x=20.
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