My Math Forum NEED HELP PLEASE :)

 Algebra Pre-Algebra and Basic Algebra Math Forum

 September 16th, 2009, 04:52 PM #1 Newbie   Joined: Sep 2009 Posts: 9 Thanks: 0 NEED HELP PLEASE :) 300 grams of type A Raisin Bran is mixed with 500 grams of type B Raisin Bran to produce a mixture which is 11% raisins. Type A Raisin Bran has twice as many raisins per kilogram as type B. What percentage of raisins are in each type of raisin bran? I dont know how to figure out the equations. Any help would be great. Thanks
 September 16th, 2009, 08:16 PM #2 Global Moderator     Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,950 Thanks: 1141 Math Focus: Elementary mathematics and beyond Let x be the percentage of raisins in Type A and let y be the percentage of raisins in Type B. 300(x/100) + 500(y/100) = 800(11/100) ? 3x + 5y = 88 and, since Type A has twice as many raisins as Type B, x - 2y = 0.
 September 16th, 2009, 08:22 PM #3 Global Moderator   Joined: Dec 2006 Posts: 20,835 Thanks: 2162 Let type B Raisin Bran have x grams of raisins per kilogram, so in 500 grams of it there are x/2 grams of raisins. Now calculate the raisin content for 300 grams of Type A Raisin Bran, etc.

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### type a and type b raisin bran

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