With solution needed : In a class of 50 students, the average marks of 20 girls is 38 and the average marks of 30 boys is 33.Find the average marks of students of the class.
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total students=50
average marks of girls=38
that means 20*38= total no. of marks
760 are the marks scored by 20 girls
similarly, avg marks of boys=33
total marks scored by boys= 990
total marks =990+760
=1750
avg marks by 50 sts=1750/50=35 ans
average marks of girls=38
that means 20*38= total no. of marks
760 are the marks scored by 20 girls
similarly, avg marks of boys=33
total marks scored by boys= 990
total marks =990+760
=1750
avg marks by 50 sts=1750/50=35 ans
Amisha341:
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