Answer:
£477.5
Explanation:
According to the problem, calculation of given data are as follows,
Total jumper bought = 80
Total spends = £130
Now, first sell 75% of jumper for £9 each, then
75% × 80 = 60
So, 60 × £9 = £540
Remaining jumper = 80 - 60 = 20
Selling half of remaining, 20÷ 2 = 10
Selling 10 jumper = (5 × £9) + (5 × £4.5 ) ( buy one get one half price)
Income of 10 = £45 + £22.5 = £67.5
So, total income by selling 70 jumpers = £540 + £67.5 = £607.5
Hence, Profit = £607.5 - £130
= £477.5