In a library, the ratio of fiction books to non-fiction books is 1:41:41:4. The non-fiction books are all either history books or science books. The ratio of history books to science books is 7:37:37:3.
What percentage of all the books in the library are science books?
Practise OCR GCSE Maths Writing a Ratio as a Fraction or Linear Function with exam-style questions for Foundation and Higher tier. 60 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers 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.