SOLUTION: An inexperienced secretary takes 3 hours to prepare a mailing. If her boss helps her, the mailing can be completed in 1 hour. How long would it take the boss to prepare the mailin

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Question 243098: An inexperienced secretary takes 3 hours to prepare a mailing. If her boss helps her, the
mailing can be completed in 1 hour. How long would it take the boss to prepare the mailing by
herself?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
An inexperienced secretary takes 3 hours to prepare a mailing.
If her boss helps her, the mailing can be completed in 1 hour.
How long would it take the boss to prepare the mailing by herself?
:
Let b = time required by the boss by himself
:
Let the completed job = 1
1%2F3 + 1%2Fb = 1
Multiply by 3b; results:
b + 3 = 3b
3 = 3b - b
3 = 2b
b = 3%2F2
b = 1.5 hrs