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jyoung551780
So half of Nina's age is 10/2= 5. And since Greg is three years younger we subtract from 5 like so...
10/2=5
5-3
2
So Greg is 2 years old. I hope this helps love! :)
2 is the answer. Half of nina age is 5. 3 less than half of nina age=greg age. greg age=5-3. = 2