Average marks obtained by 15gurls of a class were 40while average marks of 10boys of the same class in the same test were 45 what is the average of class of 25students
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Answered by
0
Answer:
42.5
Step-by-step explanation:
because 45 +40=85 out of 200 so
42.5 is my answer
Answered by
0
Step-by-step explanation:
Average of girls = 40
= Total marks/ No. of students
= 15(40)/15
Average of boys = 45
= Total marks/ No. of students
= 10(45)/10
Total average = Total marks of boys and girls / Total no. of students
= [15(40)+10(45)]/25
= 600+450/25
= 1050/25
= 42
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