Express the ratio for 380 and 1750

I need the answer by 5 november 2013 please

VALUES OF 380ppm and 1750ppb  FOR CONFRONTATIONS IN THE ATMOSPHERE OF CARBON DIOXIDE AND METHANE.

EXPRESS THE RATIO OF CARBON DIOXIDE AND METHANE IN THE ATMOSPHERE IN THE FORMAT

X:1, where x is a whole number given to 2 significant figures.

Please show your working

 

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1 Answer

???????????? "konfrantrashuns" ?????????

????? "express"...NE-thang tu du with the xpres traen ????????

380/1750=0.217142857

or bout 21.7%
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