Answer:
60 pounds
Step-by-step explanation:
Let n be the normal price.
Then (1.00-0.10)(n) = 54 pounds, or 0.90(54)n = 54 pounds.
Dividing both sides of this equation by 0.90(54)n yields:
54 pounds
n = -------------------- = 60 pounds
0.90(54)
The shoes were formerly priced at 60 pounds.
10% off of that would come to 6 pounds, so the sale price would be
(60 - 6) pounds, or 54 pounds. This checks.
n
