SOLUTION: A 1/2-hp Gempler's pump can remove water from a pool in 48 min. A 250 series Liberty pump can complete the same job in 30 min. How long would it take the two pumps working together

Algebra ->  Rate-of-work-word-problems -> SOLUTION: A 1/2-hp Gempler's pump can remove water from a pool in 48 min. A 250 series Liberty pump can complete the same job in 30 min. How long would it take the two pumps working together      Log On


   

Question 1034278: A 1/2-hp Gempler's pump can remove water from a pool in 48 min. A 250 series Liberty pump can complete the same job in 30 min. How long would it take the two pumps working together to pump out the pool?
Answer by ikleyn(52866) About Me  (Show Source):
You can put this solution on YOUR website!
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A 1/2-hp Gempler's pump can remove water from a pool in 48 min. A 250 series Liberty pump can complete the same job in 30 min.
How long would it take the two pumps working together to pump out the pool?
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1%2F48+%2B+1%2F30 = 10%2F480+%2B+16%2F480 = 26%2F480 = 13%2F240.

Answer. 240%2F13 minutes = 18.46 minutes (approx.)

For details see the lessons
    - Using Fractions to solve word problems on joint work,
with detailed explanations of solutions to similar problems.

The formulation of the problem produces very strange impression about its author.
For which reason the formulation contains these very special names that only distract the attention from the problem itself?

The usual way is to use the names Pump 1 and Pump 2 (without loss of generality . . . ).