Question

Thank you in advance. :)

Answer 1

Well if the wall dimensions are 13 by 10ft

that is 130 area ft^2

and one can can fill up 25ft^2

how many cans does she need?

130  = 25 *x to see how many cans she needs

x= 5.2 cans

hope that helps and if right? 

Answer 2

The dimension of the wall is 130ft. Since one can of paint covers 25 square feet, you must divide 130 by 25.
The answer is 5.2 cans of blackboard paint.