Work together for a fixed time: fraction of work done or left

1. A.
   $\frac{1}{2}$
2. B.
   $\frac{1}{5}$
3. C.
   $\frac{1}{6}$
4. D.
   $\frac{1}{8}$

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1. A.
   $38\%$
2. B.
   $52\%$
3. C.
   $56\%$
4. D.
   $45\%$

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

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1. A.
   $\frac{1}{35}$
2. B.
   $\frac{1}{36}$
3. C.
   $\frac{5}{36}$
4. D.
   $\frac{35}{36}$

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

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1. A.
   $\frac{3}{8}$
2. B.
   $\frac{1}{8}$
3. C.
   $\frac{243}{360}$
4. D.
   $\frac{7}{18}$

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

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1. A.
   $\frac{1}{4}$
2. B.
   $\frac{7}{15}$
3. C.
   $\frac{8}{15}$
4. D.
   $\frac{11}{15}$

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1. A.
   $\frac{1}{4}$
2. B.
   $\frac{5}{8}$
3. C.
   $\frac{3}{8}$
4. D.
   $\frac{7}{24}$

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