A factory produces 300 widgets in one hour. Each widget is either red, blue, green, or yellow.
15% of the widgets are red.
310\displaystyle \frac{3}{10}103 of the widgets are blue.
The ratio of the number of green widgets to the number of yellow widgets is 2:3 2:3\,2:3
Work out the number of green widgets produced.
93 exam-style questions on OCR GCSE Maths Ratio. Each one has a worked solution and a mark scheme showing where the marks go.