Answer:
[tex]0.82B[/tex]
or
[tex]B-0.18B[/tex]
Step-by-step explanation:
When the price has been reduced by 18%, you can either say that the price is 82% of the original price (100-18), or that you've subtracted 18% of the original price from the original price.
Option A. 82% of the original price
Reduction: [tex]18\%[/tex]
% of original price: [tex]100\% - 18\% = 82\% = 0.82[/tex]
Since the original price is B, the on-sale price can be expressed as:
[tex]0.82 * B = 0.82B[/tex]
Option B. Subtracting 18%:
Reduction: 18% of B = [tex]0.18 * B[/tex]
Original price is B.
Original price minus the reduction:
[tex]B - 0.18 * B[/tex]
