Table legs =4x, table top = x.

x/50+4x/30=5

Non-integer solution

So the original title is wrong, it should be changed to1m 3, which can make 5 desktops.

x/5+4x/30=5

x= 15

So, use X/5 = 3m 3 as the desktop.

Table leg 4x/30 = 2m 3.