document.write( "Question 991780: Joe needs 200g of 89% cocoa but she only has 99% cocoa and 70% cocoa how much does she need of each? Solve using 2 equations \n" ); document.write( "
Algebra.Com's Answer #611571 by josgarithmetic(39625)\"\" \"About 
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The perfect method is explained in this lesson:
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