stuck on algebra question please help! and an explanation would be appreciated:)

Algebra
Tutor: None Selected Time limit: 1 Day

Vincent can sand a deck in 120 minutes.  Carlos can sand the same deck in 95 minutes.


Approximately how long would it take to sand the deck if Vincent and Carlos worked together?
Jan 5th, 2015

Vincent does 1/120 = 0.00833work in  1minute

Carlos does 1/95= .010526 work in 1 minute

Both do .01886 work in  1minute

Full work will be done in 1/0.01886 =53.02 minutes

Jan 5th, 2015

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Jan 5th, 2015
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