2 There are 48 counters in a bag. There are only red counters and blue counters in the bag. number of red counters: number of blue counters = 1:2 Helen has to work out how many red counters are in the bag. She says, "There are 24 red counters in the bag because 1 is half of 2 and 24 is half of 48" Is Helen correct? You must give a reason for your answer. ​