## Exam-Style Questions on Ratio Simultaneous Equations## Problems on Ratio Simultaneous Equations adapted from questions set in previous exams. |

## 1. | GCSE Higher |

The prices of two watches are in the ratio \(a:b\).

When the prices are both increased by £10, the ratio becomes \(5 : 7\).

When the prices are both reduced by £10, the ratio becomes \(1 : 3\).

Express the ratio \(a:b\) in its lowest terms.

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