RRB Paramedical Staff Nurse Model Paper 9

Question : 53 of 100

Marks: +1, -0

Devi’s present age is three times his son’s present age and nine-thirteenth of his father’s present age. The sum of their ages after five years is 115 years. What is the sum of the present ages of Devi’s son and Devi’s father?

54
64
74
Cannot be determined

Validate

Solution:

Present age of

F+S+D = 115-15 = 100

S = F/3; D = {13F}/9

F(1+1/3+13/9) = 100

F =36; S = 12; D =52

D+S = 52+12 = 64

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