How old are the father and son at present? - ProProfs Discuss
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How old are the father and son at present?
A father's age is five times his son's age. Four years ago the father was 9 times older than his son.



A. 30yrs and 6yrs
B. 25yrs and 5yrs
C. 40yrs and 8yrs
D. None of these

This question is part of ADF Sample Aptitude Test
Asked by Policeprepaus, Last updated: May 22, 2020

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Policeprepaus

Policeprepaus

Answered Nov 25, 2017

40yrs and 8yrs

You can solve this by rough estimation given you have multiple choice here. You can quickly see that each of the first 3 answers satisfy the condition that the father is currently 5 times the age of the son. By subtracting 4 years from each age in each answer you will see them as follows: a: 26 and 2 b: 21 and 1 c: 36 and 4 Now it is clear that the answer is c: 40 and 8 (because 4 x 9 = 36 and 5 x 8 = 40). These questions are why it is important to learn your multiplication tables prior to testing.
 

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