Efficiency ratio and one worker's time: the other worker's time alone

1. A.
   $16\frac{3}{5}$ days
2. B.
   $18\frac{3}{4}$ days
3. C.
   $19\frac{5}{3}$ days
4. D.
   $17\frac{5}{3}$ days

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1. A.
   24 days
2. B.
   30 days
3. C.
   35 days
4. D.
   40 days

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1. A.
   12 days
2. B.
   10 days
3. C.
   13 days
4. D.
   15 days

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