Answer: £53,205
Explanation:
As Megan is in the highest tax bracket, she will have to pay the maximum tax in each bracket up till her own.
Bracket 1 = (11,000 - 0) * 0% = £0
Bracket 2 = (43,000 - 11,000) * 20% = £6,400
Bracket 3 = (150,000 - 43,000) * 40% = £42,800
Bracket 4 = (158,900 - 150,000) * 45% = £4,005
Total tax = 6,400 + 42,800 + 4,005
= £53,205