SOLUTION: My son is seven times older than my grandson and I am 12 times older than my grandson. If you add all our ages together, the sum is 100 years. Can you tell me my age in years?

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Question 318329: My son is seven times older than my grandson and I am 12 times older than my grandson. If you add all our ages together, the sum is 100 years. Can you tell me my age in years?
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Let represent the grandson's age. Then is the father's age and is the grandfather's age.

The sum:



Solve for then multiply by 12.

John