Answer:
the answer should be $211.2 or $211 when rounded
Explanation:
1. The original price is $440
2. There is a 20% discount
3. The discount is increased by 10%, making it a 30% discount
first you need to do $400 * (100% - 30% - 10%) = $280
$400 * 60% = $280
This is assuming that in this case "further marked down" means the 10% discount is added to the original 20% discount to make a 30% discount. However this could mean the price after the first markdown gets the 10% discount which would get different result:
$440 * 60% = $264
$264 * 80% = $211.2 or $211 when rounded