Marcus has an annual salary of £22,500. He receives a personal allowance of £10,000.
He pays a basic rate of 20% on taxable income between £0 and £31,000 and a higher rate of 40% on taxable income between £31,000 and £140,000.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

The answer is something i don’t know