A person's age is 4 times that of his daughter. After 5 years, the person's age will be 3 times his daughter's. What is the daughter's age now?
Show answer & explanation
Correct answer: C
Explanation
Let the present age of daughter = x years
So present age of the person (father) = 4x years
5 years later:
Father's age = 4x+5
Daughter's age = x+5
According to the question,
4x+5=3(x+5)
4x+5=3x+15
x=10
Hence, the present age of the daughter is 10 years.
Correct Answer: 10 years