Three workers' individual times: time working together

1. A.
   10
2. B.
   5
3. C.
   8
4. D.
   6

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1. A.
   $3\frac{3}{59}$
2. B.
   $2\frac{2}{59}$
3. C.
   $2\frac{2}{5}$
4. D.
   $2\frac{2}{57}$

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1. A.
   $7\frac{11}{19}$
2. B.
   $5\frac{17}{19}$
3. C.
   $4\frac{13}{19}$
4. D.
   $6\frac{7}{19}$

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1. A.
   3.32
2. B.
   2.12
3. C.
   2.42
4. D.
   3.21

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1. A.
   4 hours
2. B.
   5 hours
3. C.
   2 hours
4. D.
   3 hours

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1. A.
   $4\frac{8}{13}$
2. B.
   $4\frac{3}{7}$
3. C.
   $4\frac{7}{13}$
4. D.
   $4\frac{5}{7}$

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1. A.
   $1\frac{52}{73}$
2. B.
   $4\frac{52}{73}$
3. C.
   $2\frac{52}{73}$
4. D.
   $3\frac{52}{73}$

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