The population of a city is increasing by x% x\%\,x% each year.
The population is expected to double in 12 years, work out the value of xxx. Give your answer to 1 decimal place.
Practise OCR GCSE Maths Repeated Percentage Change with exam-style questions for Foundation and Higher tier. 56 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.