### Answers − Percentages in Reverse

#### 1. 70% of the price of a mobile phone is £70.

#### What was the price before the sale?

( 70 × 100 ) ÷ 70 = 7000 ÷ 70 = 100. |

So the original price of the mobile phone was £100 |

#### 2. 60% of the price of a weeks holiday to Spain is £300.

#### What was the original price?

( 300 × 100 ) ÷ 60 = 30000 ÷ 60 = 500. |

So the original price of the Spain was £500 |

#### 3. 30% of the price of a Car is £2400 is the deposit.

#### How much does the car cost?

( 2400 × 100 ) ÷ 30 = 240000 ÷ 30 = 8000. |

So the car costs £8000 |

#### 4. 60% of the price of a pair of trainers is £54.

#### What was the price before the sale?

( 54 × 100 ) ÷ 60 = 5400 ÷ 60 = 90. |

So the original price of the trainers was £90 |

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