Sarah purchased a high-end professional laptop. Every year the laptop depreciates in value by 20%.
Work out the number of years it takes for the laptop to half in value.
Practise Eduqas GCSE Maths Compound Interest and Depreciation with exam-style questions for Foundation and Higher tier. 44 questions, matched to the Eduqas GCSE Maths (C300QS) specification and written in Component 1 and Component 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.