document.write( "Question 417730: Will solve the equation. Just need help utilizing proper formula. Thank you. How many gallons of a 3% salt solution must be mixed with 50 gallons of a 7% solution to obtain a 5% solution? \n" ); document.write( "
Algebra.Com's Answer #292418 by mananth(16946)![]() ![]() You can put this solution on YOUR website! percent ----------------quantity \n" ); document.write( "7 ----------------50 \n" ); document.write( "3 ----------------x \n" ); document.write( "5 ----------------50+x\r \n" ); document.write( "\n" ); document.write( ".. \n" ); document.write( "7*50+3*x=5(50+x) \n" ); document.write( "350+3x=250+5x \n" ); document.write( "3x-5x=250-350 \n" ); document.write( "-2x=-100 \n" ); document.write( "/-2 \n" ); document.write( "x=50 gallons \n" ); document.write( " \n" ); document.write( " |