SOLUTION: a man has 20 sons. each son has an age gap of one and a half years. the father fathered his eldest son at the age of 24. His youngest son now is 20 years old. how old is the father

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Question 887605: a man has 20 sons. each son has an age gap of one and a half years. the father fathered his eldest son at the age of 24. His youngest son now is 20 years old. how old is the father at the present?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
After the 1st son ( eldest son ), the man fathered
+19+ more sons. There are +19+ one and a half
years age gaps to add up.
+19%2A1.5+=+28.5+
+24+%2B+28.5+=+52.5+
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The man was +52.5+ when the last son was born
+52.5+%2B+20+=+72.5+
The father is 72 and 1/2 years old