If the average marks of two sections of 40 and 45 students respectively is 75 and 60, then the ...
If the average marks of two sections of 40 and 45 students respectively is 75 and 60, then the average marks of all the students is:
Answer/Solution
67.05
Steps/Work
Explanation :
Required average = (40 x 75 + 45 x 60)/(40 + 45)
= (3000 + 2700)/85
= 5700/85
= 67.05
Answer : B
Required average = (40 x 75 + 45 x 60)/(40 + 45)
= (3000 + 2700)/85
= 5700/85
= 67.05
Answer : B