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Age 14 to 16 Challenge Level:

Joseph from Park View Community School sent us the following solution:
 
Find the percentage away from the world record for each event. Increase the 3 lowest events by 20% and accordingly maintain current levels for the 3 greatest events. increase performance by 10% on the remaining event. I calculated all points including all percentage increases as well using excel.

You can download Joseph's spreadsheet to see how he calculated this solution here.