math
posted by Lilly on .
20 fl oz/min = __ qt/day
answer: 1qt/4 day?

recall these conversions:
1 qt = 32 fl oz
1 day = 24 hours = 24*60 minutes
using dimensional analysis to cancel units:
(20 oz)*(1 qt/32 oz) = 20/32 = 5/8 qt
(1/1 min)*(24*60 min/1 day) = 24*60/day
now multiply them (units in qt/day):
(5/8)*(24*60)
how do you multiply fractions and numbers? 
idk. Well 24 x 60 is 1440.

right, 24*60 = 1440
then 1440 * 5/8 = ? 
how would I do that?

since 1440 is a whole number, you can rewrite it as
1440 = 1440/1
*any whole number divided by 1 is itself.
then multiply fractions like normal multiplication,,
numerator: number above the line,
denominator: number below the line,
numerator times numerator, and
denominator times denominator
1440/1 * 5/8 = ?
let me see your work. 
I got 900 is that right? And if so would it e 990 qt/day or 900 qt/1day?

Right~! :)
qt/day is fine. no need to write 1.