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?
ক 22 years
খ 30 years
গ 40 years
ঘ 32 years
The average marks obtained by a group of 16 students was 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.5. What was the average marks obtained by the student who left and the one who joined?
ক 10
খ 11
গ 8
ঘ 9
The average age of a group of 10 students is 15 years . when 5 more students joined the group , the average age rise by 1 year. what is average age of the newly joined students?
ক 16
খ 17
গ 18
ঘ 19
The average age of a group o f10 students was 20. The average age increased by 2 years when two new students joined the group students who joined the group?
ক 22 years
খ 30 years
গ 40 years
ঘ 32 years
The average of a group of 10 students is 15 years. When 5 more students joined the group, the average age rose by 1 year. What is the average age of the newly joined students?
ক 16
খ 17
গ 18
ঘ 19
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?
ক 23
খ 37
গ 24
ঘ 29
The average age of a group of 12 students is 20 years, If 4 more students Join the group, the average age increases by 1 year, the average age of the new student is-
ক 28
খ 26
গ 24
ঘ 22
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.
ক 20
খ 25
গ 23
ঘ 56
The average age of a group of 12 students is 20 years, If 4 more students join the group, the average age increases by 1 year, the average age of the new students is
ক 28
খ 26
গ 24
ঘ 22
The average age of 12 students is 20 years. If the age of one more student is included, the average decreases by 1, what is the age of the new student ?
ক 5
খ 7
গ 9
ঘ 11

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