What numberslie between 3/4 and 8/9 whose denominator is 36?

1)3/4; 36/4=9 -> 3/4=(3*9)/(4*9)=27/36;
2)8/9; 36/9=4 -> 8/9=(8*4)/(9*4)=32/36;
numbers lie between 27 and 32 is 28, 29, 30, 31.
answer: 28/36; 29/36; 30/36; 31/36