SOLUTION: If it takes Ron to do a job alone in 3 days and his assistant 6 days alone, how many days would it take them if they did it together?
I know I need to break it down per day but
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I know I need to break it down per day but
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Question 103122: If it takes Ron to do a job alone in 3 days and his assistant 6 days alone, how many days would it take them if they did it together?
I know I need to break it down per day but I can't figure it out Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If it takes Ron to do a job alone in 3 days and his assistant 6 days alone, how many days would it take them if they did it together?
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Ron DATA:
Time = 3 day/job ; Rate = 1/3 job/day
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Assistant DATA:
Time = 6 day/job ; Rate = 1/6 job/day
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Together DATA:
Time = x days/job ; Rate = 1/x job/day
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EQUATIOn:
rate + rate = rate together
1/3 + 1/6 = 1/x
Multiply thru by 6x to get:
2x + x = 6
3x = 6
x = 2 days (time to do the job together)
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Cheers,
Stan H.
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