Lavender Flower Easy Painting | Arts And Crafts | Anybody Can Paint

The bar graph shows the number of paintings sold by an art gallery in each month from January to June. How many paintings does it need to sell in July for the 7 month average to be 90?

Daniel is painting the walls and ceiling of a cuboidal hall with length,breadth and height of 15m,10m and 7m respectively.From each From each can of paint 100m^(2) of area is painted.How many cans of paint will she need to paint the room?