Answer:
The cost of painting the interior halss is $336
Explanation:
See the attached worksheet. Assumptions are made on what portions of the hall are to be painted. The total area of the 2 identified walls is calculated. The pots of paint are then calculated, by using the conversion factor (1 pot)/(40 m^2), which leads to a need for 21 pots. The price per pot is then multiplies by the number of pots required to produce a result of $336 to cover the walls with one coat of paint.