SOLUTION: Mr. I does a job in x hours while Mr. L can do it in y hours. How much of the job could they do together if they were to work for k hours?
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Question 1067841: Mr. I does a job in x hours while Mr. L can do it in y hours. How much of the job could they do together if they were to work for k hours? Answer by ikleyn(52795) (Show Source):