Dermot has 240 counters. The counters are either red, or blue, or yellow or green.
15% of the counters are red.
25\displaystyle \frac{2}{5}52 of the counters are blue
The ratio of yellow counters to green counters is 3:1
Work out the number of yellow counters Dermot has.
Practise Oxford AQA IGCSE Maths Ratio with exam-style questions for Core and Extended tier. 21 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) 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.
