If John can mow the lawn in 2/3 of an hour and George can mow the lawn in 1 hour, how long will they take to mow the lawn togeth er? 2/5 of an hour 3/5 of an hour 3/4 of an hour
2 answers:
This is esay to do when you realize the the speed of mowing is addtive. This is if John mows at 1 lawn / (2/3) hour and Gerge mows at 1 lawn / 1hour, the total speed of mowing is: 1 / (2/3) + 1 = 3/2 + 1 = 5/2 => 5/2 of lawn per hour Now, the time is calcualted as the amount of lawn divided by the speed: 1 lawn / (5/2 lawn/hour) = 2/5 hour.Answer: 2/5 of an hour.
Answer:
ANSWER IS 2/5 HOPE THIS HELPS U!!!
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