IBPS Government Jobs Exams Numerical Ability Age Problem

Present age of Rakesh is 100/3% of the age of his father and his father is half of the age of his grandfather. The average of the present ages of all of them is 110/3 years. What was the ratio of their ages 10 years ago?
A) 11 : 33 : 66 B) 1 : 43 : 56 C) 21 : 43 : 76 D) 1 : 23 : 56 E) 1 : 26 : 56

Read Solution (Total 1)

Answer-d)1:23:56

R=100/3% of F=100/300 of f =>R=1/3F
F=1/2G => G=2f
Average=(R+F+G)/3=110/3
R+F+G=110

1/3F + F + 2f = 110

10/3F=110

F = 110*3/10 = 33

R = 1/3F=11
G=2F=2*33=66

10 years ago,their age will be

R=11-10=1
F=33-10=23
G=66-10=56

Therfore Ratio is 1:23:56
5 years agoHelpfull: Yes(1) No(0)

IBPS Other Question

2 employees and 3 trainees together can finish a project in 7 days, 6 employees and 13 trainees together can finish the same project in 2 days. Find the time taken by 4 employees and 4 trainees together to finish the same work.
A) 5 days B) 8 days C) 4 days D) 6 days E) 7 days The ratio of incomes of A and B in 2017 is 2:3 and ratio of incomes of A in 2017 and 2018 is 4:5. Find the expenditure of A in 2018 if saving in the same year is Rs. 4000. It is given that in 2017 sum of income of A and B is Rs. 25000.
A) Rs. 8000 B) Rs. 9500 C) Rs. 8500 D) Rs. 10000 E) Rs. 10500