
http://puzzle.arpatubes.net/
That site posts a new word problem every week. This week has me stumped. This is what I have so far-
V=450,000,000mL
One 1:5 mix = 2000mL
Cost of one mix = $31.25
I'm factoring in 9/10ths to give me 405,000,000mL
divide by 2000 then multiply by 31.25
Am I missing something?