In a bag there are blue sweets, red sweets and yellow sweets.
The number of red sweets is three times the number of blue sweets.
The number of yellow sweets is half the number of red sweets.
Write down the ratio of blue sweets to red sweets to yellow sweets.
Give your answer in the form a:b:c a : b : c\,a:b:c where aaa, b b\,b and c c\,c are whole numbers