Let
, and Find the
.
Method 1: Using the product rule.
\Product rule for inverse variations:
.
(Substitute
)
(Product of two same sings is positive)
Apply division property of equality: If a = b then
.
(Divide each side by 5)

Method 2: Using the proportion rule.
\proportion rule for inverse variations:
.
(Substitute
)
Apply cross product property:
.

(Product of two same sings is positive)
(Divide each side by 5)

The value of
.