2014 SQA Nat 5 Mathematics Paper1: 9 Reverse percentage.

Calculate the initial amount given the result of a percentage calculation. Instructional exercise consisting of question 9 from the first paper of the 2014 SQA National 5 Mathematics examination. Where appropriate the alternative methods for solving the problem are also given. Set out in stages of 'try then check' the worked solution to each part of the question. Including indications of where each mark is allocated, and the requirements for that mark, according to the marking scheme.