You can
put this solution on YOUR website!Mrs. Johnson planned to spend $78 for fabric to make draperies. She found her
fabric on sale at 20 percent less per yard than she expected and was able to
buy her drapery fabric plus 4 extra yards for a bedspread for $83.20.
How much fabric had she planned to buy and what was the original cost per yard?
:
Let x = amt of fabric she planned to buy
then
(x+4) = amt she ended up buying
:
Presale price per yard =
:
20% off price per yard = .8*
=
:
Actual price per yard =
:
20% off = Actual price
=
cross multiply
83.2x = 62.4(x+4)
:
83.2x = 62.4x + 249.6
:
83.2x - 62.4x = 249.6
:
20.8x = 249.6
x =
x = 12 yds she planned to buy
:
Presale price =
= $6.50 per yd
:
:
Check solution by finding the actual price per yard:
=
= $5.20 per yd
Is it equal to 20% off of $6.50 a yard?
.8 * 6.5 = $5.20, hurray, it is!
