document.write( "Question 1009667: Harry bought 20 kg of rice at $18 per kg and 25 kg of rice at $ 16 per kg. He mixed the two varieties and sold the mixture at $ 19 per kg. Find his gain percent in the whole transaction. \n" ); document.write( "

Algebra.Com's Answer #625133 by josmiceli(19441) $\"\"$ $\"About$

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Cost of the $18/kg rice: $\"+18%2A20+=+360+\"$
\n" ); document.write( "Cost of the $16/kg rice: $\"+16%2A25+=+400+\"$
\n" ); document.write( "------------------------------------
\n" ); document.write( "Let $\"+x+\"$ = the actual value of the mixture
\n" ); document.write( "of the 2 kinds of rice
\n" ); document.write( " $\"+%28+360+%2B+400+%29+%2F+%28+20+%2B+25+%29+=+x+\"$
\n" ); document.write( " $\"+x+=+760+%2F+45+\"$
\n" ); document.write( " $\"+x+=+16.89+\"$
\n" ); document.write( "----------------
\n" ); document.write( "He asks $19/kg, so he makes $\"+19+-+16.89+=+2.11+\"$
\n" ); document.write( "Since he paid $\"+18%2B+16+=+34+\"$ for the rice,
\n" ); document.write( " $\"+%28+2.11%2F34+%29%2A100+=+6.21+\"$
\n" ); document.write( "His % gain was 6.21% \n" ); document.write( "

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