Harry has 50 sweets.
He gives 25\displaystyle \frac{2}{5}52 of the sweets to Sandra.
He gives 310\displaystyle \frac{3}{10}103 of the sweets to Jamie.
Harry keeps the rest of the sweets for himself.
Work out how many sweets Harry keeps.
Hence work out the fraction of the sweets that Harry keeps.
228 exam-style questions on Eduqas GCSE Maths Fractions of an Amount. Each one has a worked solution and a mark scheme showing where the marks go.