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Question 1: A company sells £99,120 worth of headphones in one week. The following week they sell £165,530.40 worth of headphones. Calculate the percentage change in sales. | |||||||||

Question 2: In a sale a television is discounted from £420 to £46.20. Calculate the percentage decrease in price. | |||||||||

Question 3: £5,510 is invested in the stock market. 3 years later the investment is worth £8,485.40. Calculate the percentage change in the initial investment. | |||||||||

Question 4: Oscar joins a company with a starting salary of £28,000. A year later this increases to £30,380. Calculate the percentage increase in salary. | |||||||||

Question 5: Emily buys a new car that costs £17,000. A year later the car is worth £12,240. Calculate the depreciation rate. | |||||||||

Question 6: Chloe earns £2,900 per month before tax. After tax is deducted this drops to £2,146. 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: 41% 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: 67% increase |

Question 2: 89% decrease |

Question 3: 54% increase |

Question 4: 8.5% increase |

Question 5: 28% depreciation rate |

Question 6: 26% tax rate |

Question 7: 1.8% to 1 d.p. |

Question 8: 69.5% to 1 d.p. |