Answer:
$388.8
Explanation:
324 is 100% of the buying price so 20% of it would be:
(20/100) × 324 = $64.8
Since it is a reduction in price, the original price must be greater so:
324 + 64.8= $388.8
OR
324 is 100% of the buying price so the original price must be 20% greater as it is a reduction hence:
100+20= 120%
(120/100) × 324= $388.8