document.write( "Question 1121791: You have 10 cups of a drink that contains 97% water. How many cups of a drink containing 43% water needs to be added in order to have a final drink that is 61% water? \n" ); document.write( "
Algebra.Com's Answer #737778 by josmiceli(19441)\"\" \"About 
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\"+10%2A.97+=+9.7+\" cups of water initially
\n" ); document.write( "Let \"+x+\" = number of cups of 43% water mixture needed
\n" ); document.write( "\"+.43x+\" = number of cups of water in the 43% mixture
\n" ); document.write( "————————
\n" ); document.write( "\"+%28+9.7+%2B+.43x+%29%2F+%28+10+%2B+x+%29+=+.61+\"
\n" ); document.write( "\"+9.7+%2B+.43x+=+.61%2A%28+10+%2B+x+%29+\"
\n" ); document.write( "\"+9.7+%2B+.43x+=+6.1+%2B+.61x+\"
\n" ); document.write( "\"+.18x+=+3.6+\"
\n" ); document.write( "\"+x+=+20+\"
\n" ); document.write( "———————
\n" ); document.write( "Check answer
\n" ); document.write( "\"+%28+9.7+%2B+8.6+%29%2F%28+10+%2B+20+%29+=+.61+\"
\n" ); document.write( "\"+18.3%2F30+=+.61+\"
\n" ); document.write( "\"+.61+=+.61+\"
\n" ); document.write( "OK
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