In a bag there are counters. The counters are all either red or blue or yellow.
The number of red counters : The number of blue counters : The number of yellow counters = 2:3:5 2 : 3 : 5\,2:3:5
The number of yellow counters is 12 more than the number of blue counters.
Work out the total number of counters in the bag.
222 exam-style questions on Eduqas GCSE Maths Ratio. Each one has a worked solution and a mark scheme showing where the marks go.