Answer:

Explanation:
Question :
Given:
varies directly with

when

To find value of
when

Solution:
From the given data we have:
∝

Thus, we have:

where
is the constant of proportionality.
We can find the value of
by plugging in the given values.
when


Dividing both sides by 2.


∴

So, the equation to find
when
will be:

Thus, when
(Answer)