Answer:
Ben painted
of the room
Explanation:
For this, you must add

5 (3) = 15
In order to get 5 to 15, you multiply by 3, therefore
2(3) = 6
In order to get 3 to 15, you multiply by 5, therefore
1(5) = 5
Which means you now have,

Which is equal to

Now an equation can be set up
11 + X = 15
-11 -11
X = 4
Ben painted
of the room
-Hope this helps!