document.write( "Question 1070544: Green day frontman Billy Joe Armstrong can write a song in 3 hours. Bassist Mike Dirnt can write one in 4 hours. How many hours will it take Billie and Mike to write 14 songs for the next album? Set up a system of equations and solve. \n" ); document.write( "
Algebra.Com's Answer #685615 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! in 1 hour Billy writes 1/3 song, Mike writes 1/4 song \n" ); document.write( "in x hours, B writes x/3 songs, Mike x/4 \n" ); document.write( "Set them equal to 14 songs \n" ); document.write( "x/3 + x/4=14 \n" ); document.write( "multiply by 12 both sides to clear fractions \n" ); document.write( "4x+3x=168 \n" ); document.write( "7x=168 \n" ); document.write( "x=24 hours, during which Billy will write 8 and Mike 6 songs. \n" ); document.write( " |