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Question 1: A company sells £94,260 worth of mattresses in one week. The following week they sell £141,390 worth of mattresses. Calculate the percentage change in sales. | |||||||||

Question 2: In a sale a mobile phone is discounted from £420 to £50.40. Calculate the percentage decrease in price. | |||||||||

Question 3: £6,480 is invested in the stock market. 3 years later the investment is worth £12,765.60. Calculate the percentage change in the initial investment. | |||||||||

Question 4: Jack joins a company with a starting salary of £29,500. A year later this increases to £30,385. Calculate the percentage increase in salary. | |||||||||

Question 5: Oscar buys a new car that costs £22,500. A year later the car is worth £18,225. Calculate the depreciation rate. | |||||||||

Question 6: Charlie earns £2,150 per month before tax. After tax is deducted this drops to £1,462. Calculate the tax rate paid. | |||||||||

Question 7: The number of Year 10 and 11 students at QuickMaths Secondary School is shown below:
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Question 8: 60% 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: 50% increase |

Question 2: 88% decrease |

Question 3: 97% increase |

Question 4: 3% increase |

Question 5: 19% depreciation rate |

Question 6: 32% tax rate |

Question 7: 2.3% to 1 d.p. |

Question 8: 150.0% to 1 d.p. |