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December 21, 2014

December 21, 2014

Posted by **Loretta** on Friday, April 15, 2011 at 1:03am.

I have no idea how to solve this. I am terrible at word problems.

- algebra -
**Jai**, Friday, April 15, 2011 at 1:23amfirst we represent the unknown using variable,

let x = pounds of nuts needed

then we set up equation. since we are given the number of pounds of raisins and its price per pound, we'll multiply it to get the total amount of the 12-lb raisins. we do the same for the the nuts,, this time we multiply x by the price of nut per pound which is 4 :

12*1.25 + 4x = 2.75*(12+x)

note that we multiply 2.75 by 12+x since mixture of nut and raisin,, solving for x,

15 + 4x = 33 + 2.75x

4x - 2.75x = 33 - 15

1.25x = 18

x = 14.4 lb of nuts

hope this helps~ :)

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