Two typist of varying skills can do a job in 6 minutes if they work together. If the first typist typed alone for 4 minutes and then the second typist typed alone for 6 minutes, they would be left with 1/5 of the whole work. How many minutes would it take the slower typist to complete the typing job working alone ?

Two typist of varying skills can do a job in 6 minutes if they work to

1.	Two typist of varying skills can do a job in 6 minutes if they work together. If the first typist typed alone for 4 minutes and then the second typist typed alone for 6 minutes, they would be left with 1/5 of the whole work. How many minutes would it take the slower typist to complete the typing job working alone ?
A.	10 minutes
B.	15 minutes
C.	12 minutes
D.	20 minutes
E.	17 minutes
Answer» C. 12 minutes

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