document.write( "Question 348008: You can wash a car in 25 minutes, your brotheew can wash a car in 15 minutes. How long does it take you both to wash a car? I tried to add the minutes together and divide by 2. I also tried taking the number in between 15 and 25. \n" ); document.write( "
Algebra.Com's Answer #248874 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! each sibling washes a FRACTION of the car based on their individual time \n" ); document.write( "___ the fractions sum to one (the WHOLE car)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "where x is the time together ___ (x / 25) + (x / 15) = 1 \n" ); document.write( " |