SOLUTION: elsa can complete a typing job in six hours. She was given a helper and together they finish the job in only four days. How long would it take the helper had he worked alone
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Question 397942: elsa can complete a typing job in six hours. She was given a helper and together they finish the job in only four days. How long would it take the helper had he worked alone Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! elsa can complete a typing job in six hours. She was given a helper and together they finish the job in only four hours. How long would it take the helper had he worked alone
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Elsa rate = 1/6 job/hr
Helper's rate = 1/x job/hr
Together rate = 1/4 job/hr
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Equation:
rate + rate = together rate
1/6 + 1/x = 1/4
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Multiply thru by 12x to get:
2x + 12 = 3x
x = 12 hrs (time for helper to do job alone)
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Cheers,
Stan H.
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