Answer:
12
Step-by-step explanation:
[tex]G:C:D\\----\\2:4:3[/tex]
Gavin has 24 sweets which is 2 units.
2 units = 24 sweets
1 unit = [tex]24\ sweets \div 2 = 12\ sweets[/tex]
Colin has 4 units, while Dan has 3 units.
Colin has 1 unit more than Dan.
Since 1 unit is 12 sweets, Colin has 12 more sweets than Dan.
