SOLUTION: Dr.Thomas McKay lived 3/13 of his life as a child.He spent 4/39 of his life preparing for his outstanding medical career.For 1/2 of his life, he was a very successful surgeon in a

Question 383788: Dr.Thomas McKay lived 3/13 of his life as a child.He spent 4/39 of his life preparing for his outstanding medical career.For 1/2 of his life, he was a very successful surgeon in a famous children's hospital.Since his retirement,he has lived 13 years on a comfortable pension.How old is he now?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
3/3+4/39+1/2=18/78+8/78+39/78=65/78
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13/(13/78)=
13*78/13=1014/13=78 yrs
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