Question

I'm trying to find the life span of this person.he spent 3/13 of his life in childhood and 4/39 of his life in medical colleage ,1/2 of his life as surgeon and died 13 years in retirement. how old dud he live​

Answer 1

Answer:

Life of man is 78 years.

Step-by-step explanation:

Let the life of man be X.

So, according to the question,

3x / 13 + 4x / 39 + x / 2 + 13 = x

=> 18x + 8x + 39x + 1014 = 78x

=> 65x + 1014 = 78x

=> 1014 = 78x - 65x

=> 13x = 1014

=> x = 1014 / 13.

=> x = 78.

So, the life of man is 78 years.