1.10 A single graduate is offered a job at a salary of £18 000 per annum. She would like to know how much pay she will receive per month after tax and National Insurance. She has obtained the following advice from her local tax office:

(a) A single person is entitled to a tax allowance of £4600.

This must be subtracted from total pay to give the taxable pay.

(b) The first £4200 of taxable pay is taxed at 15 per cent.

(c) Any remaining taxable pay is taxed at 23 per cent.

(d) The National Insurance is 10 per cent of total pay, but is subtracted from the amount of pay after tax.

Work out how much her take-home will be per month.