document.write( "Question 50120: Hi. Mr. Stanley moved 3/4 of the lawn in 1 and 1/4 hours. Mr. Samuels, who work twice as fast, finished mowing the lawn. How many minutes did Mr. Samuels work?
\n" );
document.write( "I got the answer 50 minutes but the book said that the answer was 12 and 1/2 minutes. Am I correct? And if not, can you please show me how to get the correct answer? Thank you \n" );
document.write( "
Algebra.Com's Answer #33301 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Mr. Stanley moved 3/4 of the lawn in 1 and 1/4 hours. Mr. Samuels, who work twice as fast, finished mowing the lawn. How many minutes did Mr. Samuels work? \n" ); document.write( "I got the answer 50 minutes but the book said that the answer was 12 and 1/2 minutes \n" ); document.write( "---------------------- \n" ); document.write( "Stanley's rate is [3/4 job]/[5/4 hr]= (3/5) job/hr. \n" ); document.write( "Samuels rate is twice that or (6/5)job/hr. \n" ); document.write( "EQUATION: \n" ); document.write( "Samual has to do 1/4 of the job in x hours at a rate of 6/5 job/hr \n" ); document.write( "(rate)*(time) = job done \n" ); document.write( "(6/5)x = 1/4 \n" ); document.write( "x=5/24 hrs. \n" ); document.write( "x=(5/24)(60 minutes) = 12.5 minutes.\r \n" ); document.write( "\n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |