Related Questions

The average age of a group of 10 students was 20. The average age increased by 2 years when two new students joined the group. What is the average age of the group. What is the average age of the two new students who joined the group?
A 22 years
B 30 years
C 40 years
D 32 years
The average age of A, B And C sis 30 years. If the difference between B's age and A's age is same as the difference between C's age and B's age . If D is 40 years older than B then what is the sum of the age B and D?
A 130 years
B 60 years
C 75 years
D 100 years
8 years ago, the ratio of A's age to B's age was 4 :5 At present the ratio of B's age and C's age is 4 : 5 At present , the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?
A 138 years
B 164 years
C 148 years
D 152 years
Son's age is now one-third of father's age. In twelve years from now son's age will be one half of the father's age . What is the son's age in years now ?
A 6
B 10
C 24
D 12
Among four students sitting in a row, average age of last three students is 20 years and the average age of first three students is 21 years. If the age of first student is 26 years, then what is the age (in years) of the last student?
A 23
B 37
C 24
D 29
the average age of a group of person going for a picnic is 16 years. twenty new person with the average are of years joined the group on the spot. Due to that, the average age of the group became 15 half years. what is the number of persons initially going for the picnic.
A 20
B 25
C 23
D 56
Father's age is four times of his son's age now. Twenty years from now, father's age will be double his son's age. What will be the son's age ten years from now?
A 15
B 20
C 25
D 30
A father's age is four times his son's age now. Twenty years from now, the father's age will be double his son's age. What will be the son's age ten years from now?
A 10
B 15
C 20
D 30
5 years ago the ration of father's age to son's age was 5:1 and 2 years later father's age will be 3 times his sons's age. What is ration of their present age?
A 5:6
B 7:3
C 10:3
D 11:7
Son's age is one-third of father's age. In 12 years from now son's age will be one- half of the father's age. What is the age of the son at present?
A 6
B 10
C 24
D 12

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