Three workers

Three workers, A, B, and C, have to work on a specific task. Workers A and B completed the task in 14 days, B with C for 23 days, and A with C for 13 days.

How long would it take to complete the task for everyone alone?
How long would it take to complete the task if all three worked together?

Correct answer:

A =  19.07 d
B =  52.65 d
C =  40.84 d
x =  10.4259 d

Step-by-step explanation:

A1+B1=141 B1+C1=231 A1+C1=131  a=19.07 d
b=52.65 d
c=40.84 d
t1=A1+B1+C1 t=A1+B1+C11 t=10.4259 d

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