Q: 80 (CAPF/2017)

One year ago, a father was four times as old as his son. After six years his age exceeds twice his son’s age by 9 years. The ratio of their present age is
question_subject: 
Maths
question_year: 
2017
question_exam: 
CAPF
stats: 
0,16,16,16,16,0,0