Convert the ratio into seconds/minutes
2/3=30/60 ; 1/2=20/60 ; 1/4=12/60
Multiply the denominator to make 1
4/3=60/60 ; 3/2=60/60 ; 5/4=60/60
Now that we have simplified, we find a common factor of the fractions
4*(4/3)=16/12 6*(3/2)=18/12 3*(5/4)=15/12
16/12 is the greatest fraction of the three, therefore we can conclude that Michael's water balloon will fill up the quickest.
