There are 80 books on a shelf.
38\displaystyle \frac{3}{8}83 of the books are fiction books.
25\displaystyle \frac{2}{5}52 of the books are non-fiction books.
The rest of the books are reference books.
Work out how many reference books are on the shelf.
Practise WJEC GCSE Maths Fractions of an Amount with exam-style questions for Foundation and Higher tier. 88 questions, matched to the WJEC GCSE Maths (3320QD) specification and written in Unit 1, Unit 2 and Unit 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.