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Question

The present age of a grandfather is 72 years while his grandson's age is 12 years. Then the ratio of their age after 8 years would be


  1. 6:1

  2. 5:1

  3. 4:1

  4. 9:1


Solution

The correct option is C

4:1


Present age of grandfather is 72 years and his grandson is 12 years.
After 8 years grandfather's age would be 80 and that of grandson would be 20 years.
So, the ratio of their respective ages would be 8020=41=4:1.

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