It is 40/28. This ratio can be simplified if you so wish.
51 and 40 are coprime so the ratio 51/40 cannot be simplified.
4:40 = 1:10
8/17, and that cannot be simplified further.
40
the ratio is 8:1.It is 8 to 1.
1/8 (5/40 simplified)
15/40 = 3/8
32/12 = 8/3
Yes, to 8/1 or 8
1/40
7/8