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 = 4:5:8 4 : 5 : 8\,4:5:8
The number of yellow counters is k k\,k more than the numbers of blue counters.
Work out, in terms of kkk, 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.