SOLUTION: Grace is more than 20 years old when her first son was born. Today the sum of their ages is no less than 60. How old are they now?
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Question 1177098: Grace is more than 20 years old when her first son was born. Today the sum of their ages is no less than 60. How old are they now?
Answer by Solver92311(821) (Show Source): You can put this solution on YOUR website!
If the son is 
years old, then Grace must be greater than 
. If the sum of their ages today is at least 60, then
Hence
So the son is at least 20 and Grace's age is strictly greater than 40.
John
My calculator said it, I believe it, that settles it
From
I > Ø
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