SOLUTION: Monica can type a proposal in 3 hours. while jose can type the same proposal in 5 hrs. How long would it take them to type the proposal if they work together?

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Question 624456: Monica can type a proposal in 3 hours. while jose can type the same proposal in 5 hrs. How long would it take them to type the proposal if they work together?
Answer by ewatrrr(24785) About Me  (Show Source):
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Hi

Monica can type a proposal in 3 hours. while jose can type the same proposal in 5 hrs. 

How longhighlight%28x%29would it take them to type the proposal if they work together?

Question states*** PER hr KEY

  1/3 + 1/5 = 1/x      |Multiplying thru by 15x so as all denominators = 1

     5x + 3x = 15    Solve for x