Question 1061836
This is ambiguous, so I will look at both parts. If the item cost $24 after a 15% sale, the original cost was 1, and you paid 0.85 of that
So $24 is 0.85 of the original cost, which is $28.24
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If the item costs $24 and is on sale for 15% off, the sale is $3.60 and the cost to buy it on sale is $20.40.