Answer : C
We need to find a fractions is Not equivalent to 36/54
can be reduced to

a. 12/18
We can divide top and bottom by 6. so the fraction is reduced to

b. 8/12 --> We can divide top and bottom by 4. so the fraction is reduced to

c. 24 /30 --> We can divide top and bottom by 6. so the fraction is reduced to

d. 48/72 ---> We can divide top and bottom by 24. so the fraction is reduced to

Option C is Not equivalent to 36/54