There are 1100 students at a school.
k k\,k students are girls, the rest are boys.
110\displaystyle \frac{1}{10}101 of the girls are left handed.
18\displaystyle \frac{1}{8}81 of the boys are left handed.
Work out the number of left handed students in the school in terms of kkk.
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.