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Question 1: A company sells £5,400 worth of mattresses in one week. The following week they sell £1,458 worth of mattresses. Calculate the percentage change in sales. |

Question 2: The population of Mathsville is 5,078,000 people. It grows by 48%. What is the new population of Mathsville? |

Question 3: £5,520 is invested in the stock market. 3 years later the investment increases by 76%. How much is the investment worth now? |

Question 4: Debbie joins a company and a year later receives a 5% pay rise, taking their annual salary to £21,000. Calculate their starting salary. |

Question 5: Chloe buys a new car that has an annual depreciation rate of 19%. A year later, the car is worth £21,465. How much did they pay for the car? |

Question 6: Jacob pays £440 income tax per month. Their income is taxed at 16%. Calculate their gross monthly income before tax. |

Question 7: Alyssa weighs 97kg and decides to go on a diet. Their target weight is 77kg. Calculate the percentage decrease in weight this represents, correct to 1 d.p. |

Question 8: If 50% of plastic bottles in a production line are blue and the remaining 2,000 plastic bottles are brown, how many plastic bottles are blue? |

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# Answers

Question 1: 73% decrease |

Question 2: 7,515,440 people |

Question 3: £9,715.20 |

Question 4: £20,000 |

Question 5: £26,500 |

Question 6: £2,750 |

Question 7: 20.6% to 1 d.p. |

Question 8: 2,000 bottles are blue |