About and 8/10!
Size 10
most of used shoes size standards in the world are UK/US/Europe Sizes as for the Philippine shoes size standard, you can refer to this usual Size Conversion Table at http://www.fulljordan.com/Column9.aspx
size 12
mesh 500 micron=31 inches=0.0012
40. (European size = American size + 31)
To convert a percent to a decimal, divide by 100. 31% = 0.31 = 31/100
31/40 = 31 divided by 40 = 0.775
31 Celsius = 87.8 Fahrenheit
The answer depends on what you wish to convert it to.
31/9
68.34330127731205
There are 36 inches in a yard and so 31 inches is 31/36 of a yard