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December 19, 2014

December 19, 2014

Posted by **Lilly** on Friday, October 29, 2010 at 12:59am.

answer: 1qt/4 day?

- math -
**jai**, Friday, October 29, 2010 at 1:06amrecall 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?

- math -
**Lilly**, Friday, October 29, 2010 at 1:09amidk. Well 24 x 60 is 1440.

- math -
**jai**, Friday, October 29, 2010 at 1:16amright, 24*60 = 1440

then 1440 * 5/8 = ?

- math -
**Lilly**, Friday, October 29, 2010 at 1:17amhow would I do that?

- math -
**jai**, Friday, October 29, 2010 at 1:32amsince 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.

- math -
**Lilly**, Friday, October 29, 2010 at 1:37amI got 900 is that right? And if so would it e 990 qt/day or 900 qt/1day?

- math -
**jai**, Friday, October 29, 2010 at 1:42amRight~! :)

qt/day is fine. no need to write 1.

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