SOLUTION: the sum of the present age of the father and his daughter is 42 years, 7 years. later, the father will be 3 times old than the daughter. the present age of the father is
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Question 909148: the sum of the present age of the father and his daughter is 42 years, 7 years. later, the father will be 3 times old than the daughter. the present age of the father is
Answer by clearblueskai(22) (Show Source): You can put this solution on YOUR website!
let x =father's present age and y =daughter's present age
- first equation
7 years later:
x+7 =father's age y+7=daughter's age
- second equation
use either elimination or substitution on the two equations
by substitution:
Father's present age: 35
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