college algebra word problems4

Mathematics
Tutor: None Selected Time limit: 1 Day

i am stuck on the following problem. here is a pic of the problem. 

http://imgur.com/Efzvc3w

any help would be appreciated

Nov 21st, 2014

this is hand calculation done very clearly

Nov 21st, 2014

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Nov 21st, 2014
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Nov 21st, 2014
Feb 27th, 2017
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