Solving For X With perimeter Homework Question #2
1 answer:
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Ax + c = R (subtract c from each side)
Ax + c - c = R - c
Ax = R - c (divide A from each side)
Ax/A = (R-c)/A
x =
<-answer
Ax + c - c = R - c
Ax = R - c (divide A from each side)
Ax/A = (R-c)/A
x =
$21.00
let the original price = 100%
then the discount price = 100 - 15 = 85%
divide $17.85 by 85 to obtain 1% then multiply by 100 to obtain original price.
original price = $17.85 × = $21