One year ago, a father was four times as old as his son. After six years his age exceeds twice his sons age by 9 years. The ratio of their present age is

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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
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question_subject: 

Maths

question_exam: 

CAPF

stats: 

0,10,6,1,10,4,1

keywords: 

{'ratio': [1, 0, 1, 12], 'age': [2, 1, 1, 2], 'present age': [0, 0, 3, 1], 'father': [15, 3, 10, 14], 'years': [1, 0, 0, 2], 'times': [5, 2, 7, 3], 'year': [27, 4, 33, 49]}