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Question 1: A mattress goes on sale and is reduced by £392.20. This represents 53% off. Caculate the original price.

Question 2: The population of Mathsville has grown over 10 years by 2,693,250 people. This represents 45% of the population 10 years ago. What was the population of Mathsville 10 years ago?

Question 3: £7,390 is invested in the stock market. 3 years later the investment is worth £5,320.80. Calculate the percentage change in the initial investment.

Question 4: Oliver joins a company and a year later receives a 7.5% pay rise, taking their annual salary to £22,037.50. Calculate their starting salary.

Question 5: Elaine buys a new car that costs £19,000. The annual depreciation rate is 26%. How much is the car worth, a year later?

Question 6: Olivia earns £1,836 per month after tax. Their earnings are taxed at 32%. Calculate their gross monthly earnings before tax.

Question 7: Jacob wants to buy the latest B-phone released by Banana Corporation. B-fones4u are selling the B-phone for £1,380 with an offer of 42% off. E-store are selling the B-phone for £1,240 with an offer of 32% off. Calculate which store is cheaper and how much could be saved compared to the other store.

Question 8: 73% of the water in a jug is poured out. Calculate the percentage increase in water now required to reach the original level of water in the jug (to 1 d.p.).

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Answers

Question 1: £740

Question 2: 5,985,000 people

Question 3: 28% decrease

Question 4: £20,500

Question 5: £14,060

Question 6: £2,700

Question 7: B-fones4u are cheaper with a saving of £42.80

Question 8: 270.4% to 1 d.p.