Mathematics
Medium
Question
The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is_________?
A
(mb – nc)/ (m + n) years
B
(mb + nc)/ (m – n) years
C
(mb + nc)/ (m + n) years
✓ Official correct answer
D
(mb – nc)/ (m – n) years
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
(mb – nc)/ (m + n) years
No member explanations yet for this option.
B
(mb + nc)/ (m – n) years
No member explanations yet for this option.
C
(mb + nc)/ (m + n) years
No member explanations yet for this option.
D
(mb – nc)/ (m – n) years
No member explanations yet for this option.