Answer:
20, 3 and 4 in that order going down.
1/2 is the same as 10/20 as they are both equal to one half.
1/3 is the same as 3/9 as they are both equal to one third.
3/4 is the same as 12/16 as they are both equal to three quarters.
3.5m questions
4.4m answers