Two workers

Two workers carry will do certain work for 12 days. After 8 days of working was one removed, and then the other finished the job alone in 10 days.

For how many days would do this work alone each worker?

Result

a =  20 d
b =  30 d

Solution:

Solution in text a =
Solution in text b =







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To solve this example are needed these knowledge from mathematics:

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