50 Challenging Maths Puzzles: with worked solutions by Harry White

Author:Harry White [White, Harry]
Language: eng
Format: azw3
Published: 2020-09-08T16:00:00+00:00

10 To calculate the tax on £100,000, this figure must first be divided into the taxable bands. The amount in each band is then multiplied by the tax rate for each band. The first £12,500 is not taxed. The next band means that (£50,000 - £12,500) £37,500 is taxed, at a rate of 20%, which is £7,500 in tax. The final band means that (£100,000 - £50,000) £50,000 is taxed at a rate of 40%, which is £20,000 in tax. Therefore, the total tax paid on £100,000 is £27,500, so the answer is D.

11 The change in stock level each month should match the change seen on the absolute stock level graphs. The only graph that matches all of the data points is E.

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