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Question 1: A company sells £46,800 worth of mobile phones in one week. The following week they sell £5,616 worth of mobile phones. Calculate the percentage change in sales. | |||||||||

Question 2: In a sale a laptop is discounted from £690 to £186.30. Calculate the percentage decrease in price. | |||||||||

Question 3: £7,810 is invested in the stock market. 3 years later the investment is worth £14,760.90. Calculate the percentage change in the initial investment. | |||||||||

Question 4: Amelia joins a company with a starting salary of £23,500. A year later this increases to £24,205. Calculate the percentage increase in salary. | |||||||||

Question 5: Debbie buys a new car that costs £20,000. A year later the car is worth £14,200. Calculate the depreciation rate. | |||||||||

Question 6: Jacob earns £1,550 per month before tax. After tax is deducted this drops to £945.50. 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: 33% more water is poured into a jug. Calculate the percentage decrease 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: 88% decrease |

Question 2: 73% decrease |

Question 3: 89% increase |

Question 4: 3% increase |

Question 5: 29% depreciation rate |

Question 6: 39% tax rate |

Question 7: 1.5% to 1 d.p. |

Question 8: 24.8% to 1 d.p. |