Three different terms here so you need to convert to one type only. Either fractions, decimal or percentage.
0.3= 30% = 3/10 mysteries
25% = 0.25 = 1/4 travel
7/20 = 35% = 0.35 childrens
Rearrange:
0.3 = 30% = 3/10
0.25 = 25% = 1/4
0.35 = 35% = 7/20
Answer is Children's is the greater at 35%