SOLUTION: A man was 21 years old when his daughter was born. Now he is three times older than his daughter. How old is his daughter now? Write a general function for this.
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Question 1010870: A man was 21 years old when his daughter was born. Now he is three times older than his daughter. How old is his daughter now? Write a general function for this.
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
Call the number of years in the future, x.
Thus we have
21 + x = 3(x)
21 = 2x
x = 10.5
She is ten and a half years old. He is 31 1/2.
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