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You can put this solution on YOUR website!
Jasmine wants to run a marathon.she knows she will have to walk some of 26.2 miles
\n" ); document.write( " but she wants to finish in 5 hrs.
\n" ); document.write( "she plans to run 10 minute miles and walk 15 minute miles.
\n" ); document.write( "If x is no of minutes she runs and y is minutes she walks,
\n" ); document.write( "what equation relates x and y to the goal of coveting 26.2 miles?
\n" ); document.write( ":
\n" ); document.write( "I'd do it this way
\n" ); document.write( "let x = no. mile she runs and y = no.miles she walks
\n" ); document.write( ":
\n" ); document.write( "Write two equations, one for distance & one for time
\n" ); document.write( "Since we are using minutes, convert 5 hrs to 300 min
\n" ); document.write( "x + y = 26.2
\n" ); document.write( "and
\n" ); document.write( "10x + 15y = 300
\n" ); document.write( "simplify, divide by 5
\n" ); document.write( "2x + 3y - 60
\n" ); document.write( "multiply the first equation by 3, subtract the ab0ve equation
\n" ); document.write( "3x + 3y = 78.6
\n" ); document.write( "2x + 3y = 60
\n" ); document.write( "-------------subtraction eliminates y, find x
\n" ); document.write( "x = 18.6 mi running
\n" ); document.write( "then
\n" ); document.write( "26.2 - 18.6 = 7.6 mi walking
\n" ); document.write( ":\"
\n" ); document.write( "Find the no. of minutes she runs and walks
\n" ); document.write( "10*18.6 = 186 min running
\n" ); document.write( "15*7.6 = 114 min walking
\n" ); document.write( "------------------------
\n" ); document.write( "total time; 300 min which is 5 hrs \n" ); document.write( "