Correct, and thanks for reminding me of the correct terminoligy - my old and lunchtime drinking session addled brain couldn't remember "expressed using the lowest common denominator"Er.. to be pedantic, and I don't care if you shout at me because I am doing a course on 'HTFU', that is not rounding down. That is finding the lowest common denominator. In fact if you shout I might consider it part of my course. Anyway mathematically fractions and decimals and percentages are exactly the same things expressed different ways. using percentages or decimals just makes it easier to be more accurate.
Sorry. A vulgar fraction is just the N/M style of representation. Vulgar as in common.Don't think so, vulgar fractions are (unsurprisingly) fractions that are capable of being refined.
Never argue mathematics with the physics police.Again, sorry for being pedantic but feel free to shout. It will count towards the course content of my HTFU degree.
It's not wrong really though - as you say, 32% is exactly the same as 32/100, it's just another way of writing it. 32% means 32 out of 100, and 32/100 means 32 out of 100... Even though as you say that the fraction could be simplified, thirty-two one hundredths isn't wrong.But to refer to a % of O2 as a fraction is wrong.
32%, written down as a fraction would be 32/100ths, the laws of maths then say that you should round down, so in effect the FO2 of a 32% mix should be written as 8/25ths - never ever seen it written like that......