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A father is 3 times older than his son and the sum of their ages is 40 years. Find their present age?

Friday, July 16th, 2010


If we let the age of the father be “F”, and the age of the son be “S”, then we know the following:

1. F = 3 x S
2. F+S=40

Therefore, F=3x(40-F)…so 4F=120.

Therefore, F=30 and S=10.

This entry was posted on Friday, July 16th, 2010 at 4:44 am and is filed under 9th Grade, Homework Answers, Math Answers. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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