document.write( "Question 763032: in what ratio must tea costing P24 per kg be mixed with tea costing P34 per kg so that a profit of 20% is made by selling the mixture at P36 per kg? \n" ); document.write( "
Algebra.Com's Answer #464521 by josgarithmetic(39617)\"\" \"About 
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What would be the price of the mixture of these teas, if u= kg of P24 type and v = kg of the P34 type:
\n" ); document.write( "\"24u%2B34v\" P units for \"%28u%2Bv%29\" kilograms.
\n" ); document.write( "The 1 kg unit cost is \"%2824u%2B34v%29%2F%28u%2Bv%29\" P per kg.\r
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\n" ); document.write( "\n" ); document.write( "Undo that 20% profit to know the cost per kg for the mixture originally.
\n" ); document.write( "\"%281%2F1.20%29%2836%29=30\" P per kg is this original mixture price or cost.\r
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\n" ); document.write( "\n" ); document.write( "Original mixture price: \"%2824u%2B34v%29%2F%28u%2Bv%29=30\"
\n" ); document.write( "And we could have assumed the original mixing were based on forming a 1 kilogram mixture, so that \"u%2Bv=1\"\r
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\n" ); document.write( "\n" ); document.write( "Use that sum relationship as substitution to the \"30\" equation and divide left & right by 2 to simplify that \"30\" so you have this system to solve:\r
\n" ); document.write( "\n" ); document.write( "\"%2812u%2B17v%29%2F1=30\" and \"u%2Bv=1\"
\n" ); document.write( "\"highlight%2812u%2B17v=30%29\" and \"highlight%28u%2Bv=1%29\"
\n" ); document.write( "Now just solve for u and v.
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