Answer:
2:5
Step-by-step explanation:
Given : 40 kids choose swimming
16 choose art
24 choose music
To Find: What is the ratio of kids who choose art to kids who choose swimming?
Solution :
No. of kids choose art = 16.
No. of kids choose swimming = 40
So, ratio of kids who choose art to kids who choose swimming :


Hence the ratio of kids who choose art to kids who choose swimming is 2:5