SOLUTION: Ralph and Tyson can wash all the windows in their house in 40 minutes if they work together. If Tyson works twice as fast as ralph, how long would it take Ralph to wash all the win

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Question 872767: Ralph and Tyson can wash all the windows in their house in 40 minutes if they work together. If Tyson works twice as fast as ralph, how long would it take Ralph to wash all the windows alone?

Found 2 solutions by ewatrrr, harpazo:
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

1%2Fx+%2B+1%2F%282x%29+=+1%2F40  |Multiplying thru by 40x so as all denominators = 1

  40 + 20 = x

    60min = x,Ralph's time

Answer by harpazo(655) About Me  (Show Source):
You can put this solution on YOUR website!
Let x represent the time it takes Ralph to do the job alone
(1/x) + (1/2x) = 1/40
Solve for x to find your answer.