SOLUTION: A man lived a fourth of his life as a boy, a fifth as a young man and a third as an adult. He spent 13 years in his old age. How old was he when he died?: A man lived a fourth of h

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Question 117423: A man lived a fourth of his life as a boy, a fifth as a young man and a third as an adult. He spent 13 years in his old age. How old was he when he died?: A man lived a fourth of his life as a boy, a fifth as a young man and a third as an adult. He spent 13 years in his old age. How old was he when he died?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Call his lifespan s
%281%2F4%29s+%2B+%281%2F5%29s+%2B+%281%2F3%29s+%2B+13+=+s
%2815%2F60%29s+%2B+%2812%2F60%29s+%2B+%2820%2F60%29s+%2B+13+=+s
15s+%2B+12s+%2B+20s+%2B+13%2A60+=+60s
47s+%2B+780+=+60s
13s+=+780
s+=+60years old answer