A local charity held a crafts fair selling donated, handmade items. Total
proceeds from the sale were $2,605. A
total of 89 items were sold, some at $20
each and the rest at $35 each.

34 sold for $20

55 sold for $35

Step-by-step explanation:

20x+35y=2605

y=(98-x)

20x+35(89-x)=2605

Solve for x

20x+3115-35x=2605

20x-35x=2605-3115

-15x=-510

x=34

.25

step-by-step explanation:

the given 6 = w/p is equivalent to 6p = w, where w is the total area of the walls and p is the area covered by a single can of paint.

knowing that 6 cans of paint will be needed, 6p = w becomes 6(6) = w = 36.   this tells us that the total area to be painted is 36 square units.