9514 1404 393
Answer:
 33.3%
Explanation:
The selling price of £42 is (1 +40%) times the total purchase price.
 1.40 × purchase price = £42
 purchase price = £42/1.40 = £30
The total profit is 40% of this, so is ...
 £30 × 40% = £12
The purchase price of the skirt is ...
 total cost - glove cost = skirt cost = £30 -3 = £27
The profit on the skirt is ...
 total profit - glove profit = skirt profit = £12 -100% × £3 = £9
Then the percentage profit on the skirt is ...
 skirt profit % = skirt profit / skirt cost × 100% = £9/£27 × 100% = 33.3%
The percentage profit on the cost of the skirt was 33.3%.