The reduced fraction for 40 over 64 is 5/8
The reduced fraction for 40 over 100 is 2/5
40/8 = 5/1 = 5
5/4
2/5
32 over 40 reduced is 4/5
5/3 or 1-2/3
5 and 200 are both divisible by 5. Therefore, 5/200 = 1/40.
21/40 cannot be reduced.
it can be reduced to 4 over 3
32/40 = 16/20 = 8/10 = 4/5 we reduced it
The fraction 13/40 cannot be reduced any more.