Help with figuring out a word problem?  TOPIC_SOLVED

Simplificatation, evaluation, linear equations, linear graphs, linear inequalities, basic word problems, etc.

Help with figuring out a word problem?

Postby WindHollowFarm on Tue Jan 08, 2013 7:06 pm

Having trouble figuring out this word problem:

How many pounds of nuts worth 50 cents a pound must be mixed with 20 pounds of nuts worth 90 cents a pound to get a mixture worth 60 cents a pound?

Gone over it many times, but must not be writing the equation correctly since I'm not getting the correct answer. Could someone help me out? Really appreciate it.
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Re: Help with figuring out a word problem?  TOPIC_SOLVED

Postby jg.allinsymbols on Tue Jan 08, 2013 10:04 pm

Main focus is on (sum of cost)/(total pounds)=60 cents per pound.
Let g = how many pounds of the 50 cent per pound nuts.

Fill in the expressions for numerator and denominator in the "Main focus" line. Solve for g. Take care to watch the units carefully to help avoid mistakes. Sum of cost must be "cents", and total pounds must be pounds.

Based on that, initial equation here (but start by yourself first):
Spoiler:
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Re: Help with figuring out a word problem?

Postby WindHollowFarm on Wed Jan 09, 2013 11:16 pm

Thank you so much!!
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