Ages: ratios or relations at two different times give present ages

1. A.
   3 : 8
2. B.
   1 : 3
3. C.
   2 : 7
4. D.
   2 : 5

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1. A.
   80
2. B.
   102
3. C.
   112
4. D.
   90

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1. A.
   $24\frac{1}{2}$ years
2. B.
   $22\frac{1}{2}$ years
3. C.
   $23\frac{1}{2}$ years
4. D.
   $21\frac{1}{2}$ years

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