SOLUTION: Machine X can complete a task in five minutes. Machine X and Machine Y, working togather can complete the same task in two minutes. How long it will take Machine Y working along to

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Question 854812: Machine X can complete a task in five minutes. Machine X and Machine Y, working togather can complete the same task in two minutes. How long it will take Machine Y working along to finish the task?
Found 2 solutions by ewatrrr, richwmiller:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Let x represent time for Machine Y working along to finish the task 

+1%2F5+%2B+1%2Fx+=+1%2F2+      |Multiplying thru by 10x so as all denominators = 1

 2x + 10 = 5x

      10 = 3x

     x = 3 1⁄3 hrs, time for Machine Y working along to finish the task

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
1/5+1/x=1/2
2/10+1/x=5/10
1/x=3/10
x=10/3=3 1/3 MINUTES not hours