document.write( "Question 1199152: help a coffee shop manager to find the amount of a certain type of coffee that sells for $5 per kilogram which should be mixed with the 30kgs of another type of coffee which sells for $9 per kg in order to make a new flavor of coffee which she sells for $7 per kilogram \n" ); document.write( "
Algebra.Com's Answer #832856 by josgarithmetic(39618)\"\" \"About 
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$5 per kg
\n" ); document.write( "30 kg of $9 per kg
\n" ); document.write( "resulting mixture $7 per kg\r
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\n" ); document.write( "\n" ); document.write( "u kilograms of the $5 per kg coffee to use\r
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\n" ); document.write( "\n" ); document.write( "\"5u%2B9%2A30=7%28u%2B30%29\"------to account for cost;
\n" ); document.write( "Solve for u.
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