please solve 7 number...
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the ans is 350 marks
DrashtiBhavsar:
how it comes?
show me the method.
by the way answer is 35
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2
Given that the average marks of 20 girls is 38.
Then the total marks of these 20 girls = 20 * 38
= 760.
Given that the average marks of 30 boys = 33.
Then the total marks of these 30 boys = 30 * 33
= 990.
Hence the total marks = 760 + 990.
= 1750
Given that the total number of students in a class = 50.
Therefore, the average marks of all the students of the class = 1750/50
= 35.
Hope this helps!
Then the total marks of these 20 girls = 20 * 38
= 760.
Given that the average marks of 30 boys = 33.
Then the total marks of these 30 boys = 30 * 33
= 990.
Hence the total marks = 760 + 990.
= 1750
Given that the total number of students in a class = 50.
Therefore, the average marks of all the students of the class = 1750/50
= 35.
Hope this helps!
thank you so much
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