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Two students appeared at an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are:-
42,33
44,35
41,32
45,36
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We see that 2 x + 9 x + 9 = 0 . 5 6 . Simplifying and cross multiplying, we find that 2 5 x + 2 2 5 = 2 8 x + 1 2 6 . Manipulating this equation finds that x equals 33. Therefore the first student scored 33, and the second one scored 42. You can plug this back in and find that it works.