There are 48 counters in a bag.
(Total for Question 21 is 2 marks
There are only blue counters and green counters in the bag.
39
number of blue counters: number of green counters = 1 : 3
Hermione has to work out how many blue counters are in the bag.
She says,
"There are 16 blue counters in the bag because 1 is a third of 3 and 16 is a third of 48"
Is Hermione correct?
You must give a reason for your answer.