Post : Indian Administrative Service (IAS)
Examination : Civil Services Preliminary
Exam Date : August 23, 2015
Programme : Basic Numeracy
Topic Covered: Problems Based on Ages
Contact Address : UPSC, Man Singh Road Area New Delhi, Delhi - 110-069
Official Website : www.upsc.gov.in
✓ The ratio of present age of Supriya and Madhu is 7 : 8 respectively. Four years hence this ratio becomes 9 : 10 respectively. What is Supriya’s present age in years?
(a) 18
(b) 14
(c) 17
(d) Data inadequate
✓ The average age of 30 boys in a class is 15 years. One boy aged 20 years, left the class, but two new boys came in his place whose ages differ by 5 years. If the average age of all the boys now in the class still remains 15 years, the age of the younger newcomer is:
(a) 20 years
(b) 15 years
(c) 10 years
(d) 8 years
✓ Six years ago Badrinath was twice as old as Kedarnath. If the ratio of their present ages is 9 : 5 respectively, what is the difference between their present ages in years?
(a) 24
(b) 30
(c) 50
(d) Cannot be determined
✓ Rohan is twice as old as Rohan and half as old as Suresh. If sum of Suresh’s and Rohan’s ages is 85 years. What is Rohan’s age in years?
(a) 34
(b) 36
(c) 68
(d) Cannot be determined
✓ Four years ago a mother was times elder than her daughter in age. If the total age of the two then be 60 years, what is the present age of the daughter?
(a) 16 years
(b) 20 years
(c) 12 years
(d) 4 years
✓ The ratio of the present ages of a son and his father is 1 : 5 and that of his mother and father is 4 : 5. After 2 years the ratio of the ages of the son to that of his mother becomes 3 : 10. What is the present age of the father?
(a) 37 years
(b) 34 years
(c) 30 years
(d) None of these
✓ Present ages of Maneesha and Gayatri are in the ratio of 7 : 9 respectively. Five years ago ratio of their ages was 3 : 4. What will be Gayatri’s age after 3 years from now?
(a) 48 years
(b) 42 years
(c) 43 years
(d) 38 years
✓ The ratio of the present ages of Shrishti and Kalyani is 4 : 5. Six years hence the ratio of their ages will be 14 : 17. What will be the ratio of their ages 12 years hence?
(a) 15 : 19
(b) 13 : 15
(c) 16 : 19
(d) 17 : 19
✓ The ages of Abdul and Naseer are in the ratio of 8 : 15 years respectively. After 9 years the ratio of their ages will be 11 : 18. What is the difference in years between their ages?
(a) 24 years
(b) 20 years
(c) 33 years
(d) 21 years
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