There are 108 left handed students at a school.
480 students are girls, the rest are boys.
18\displaystyle \frac{1}{8}81 of the girls are left handed.
110\displaystyle \frac{1}{10}101 of the boys are left handed.
Work out the number of students in the school.
228 exam-style questions on OCR GCSE Maths Fractions of an Amount. Each one has a worked solution and a mark scheme showing where the marks go.