document.write( "Question 1158568: Ed and Hew are product testers at IL Incorp. Ed can drop a piece of luggage off the top of headquarters and then record the results once every 4 minutes. Hew can do the same once every 5 minutes. How many minutes will it take them together to drop their luggage and record the results a (combined)total of 18 times? \n" ); document.write( "
Algebra.Com's Answer #781540 by greenestamps(13203) You can put this solution on YOUR website! \n" ); document.write( "Consider the least common multiple of the two given times, which is 20 minutes. \n" ); document.write( "In 20 minutes, Ed can drop 20/4=5 pieces of luggage and Hew can drop 20/5=4 pieces of luggage. So in 20 minutes together, the two of them can drop 5+4=9 pieces of luggage. \n" ); document.write( "18 pieces is twice that number; so it will take them twice as long -- 40 minutes -- to drop 18 pieces of luggage. \n" ); document.write( " \n" ); document.write( " |