![POTW_9 Welcome to the Colo Mathematics Departments Problem of the Week for week 9](/content/dam/doe/sws/schools/c/colo-h/maths-problem-of-the-week/term-1-2020/week-9/POTW_9.png.thumb.1280.1280.png)
![QUESTION_9 Problem of the week question for week 9](/content/dam/doe/sws/schools/c/colo-h/maths-problem-of-the-week/term-1-2020/week-9/QUESTION_9.png.thumb.1280.1280.png)
![QUOTE_9 "Nine-tenths of education is engagement" - Anatole France](/content/dam/doe/sws/schools/c/colo-h/maths-problem-of-the-week/term-1-2020/week-9/QUOTE_9.png.thumb.1280.1280.png)
![YOUR_SOLUTION Your solution - This week please email your solution with a photo of your working toMrs Bridge.](/content/dam/doe/sws/schools/c/colo-h/maths-problem-of-the-week/term-1-2020/week-9/YOUR_SOLUTION.png.thumb.1280.1280.png)
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