Question

Swamee and Luigi were printing calendars. Swamee used 21/2 ink cartridges while Luigi used 13/4 ink cartridges. How many more ink cartridges did Swamee use than Luigi?

Answer 1

11/4

Explanation:

multiple with the smallest common 2 and 4 is 4 so :

12*2/2*2 - 13/4 24/4 - 13/4= 11/4