document.write( "Question 51224: 1) What quanity of 75% acid solution must be mixed with a 30% solution to produced 1080mL of a 50% solution?\r
\n" ); document.write( "\n" ); document.write( "2) 2 cyclist, 48 miles apart, start riding toward each other @ the same time. One cycles 3 times as fast as the other . If they meet 2 hrs. later, what is the speed (in miles per hours) of the faster cyclist?
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Algebra.Com's Answer #34210 by Nate(3500)\"\" \"About 
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1.)
\n" ); document.write( "\"%28%280.75x%29+%2B+%280.30%281080+-+x%29%29%29%2F1080+=+0.50\"
\n" ); document.write( "\"0.75+%2B+324+-+0.3x+=+540\"
\n" ); document.write( "\"0.45x+=+216\"
\n" ); document.write( "\"x+=+480\"
\n" ); document.write( "Plug:
\n" ); document.write( "1080 - x
\n" ); document.write( "1080 - 480 = 600
\n" ); document.write( "600mL of 75% solution and 480mL of 30% solution
\n" ); document.write( "2.)
\n" ); document.write( "Rate * Time = Distance
\n" ); document.write( "2(r + 3) + 2r = 48
\n" ); document.write( "2r + 6 + 2r = 48
\n" ); document.write( "4r = 42
\n" ); document.write( "r = 10.5
\n" ); document.write( "One was going 10.5 mph while the other was going 13.5 mph.
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