Fortune Telling Collection - Ziwei fortune-telling - My father is 45 years old. Five years ago, my father was four times as old as my son. How old is my son this year? (Equation solving)
My father is 45 years old. Five years ago, my father was four times as old as my son. How old is my son this year? (Equation solving)
The beauty of professional team mathematics answers you the first time:
Solution: Let the son be X years old, and so on.
45-5=4*(x-5)
40=4x-20
60=4x
x= 15
So my son is 15 years old this year.
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