Question 3324
Diane {{{1/8}}} or 1 house in 8hrs
Anne {{{1/10}}} or 1 house in 10hrs

Working together (since they are painting simultaneously),
{{{1/8 + 1/10 = 1/x}}}

Solving for x will give us x=40/9 or 4.44hrs to paint the house together.

Now if we want to solve the portion of the house painted in 2hrs, we can use the above formula as follows:
{{{1/8 + 1/10 = y/2}}}

Solving for y gives us y=9/20 of the house painted in 2hrs.
So the answer is {{{9/20}}}.