Question

in class 10th there are three section A B and C with 40 35 and 25 students respectively the average marks of section a is 65% of section b is 50% of Section C 70% find the average mark of the entire class 10​

Answer 1

Step-by-step explanation:

Average = Total Dataa / No. of data

= 65% + 50%+ 70% / 3

= 61.666 %

Answer 2

The average marks of the entire class 10 standard is 61%

Solution:

Given that,

Students in section A = 40

Students in section B = 35

Students in section C = 25

Given that,

Average marks of section a is 65% and section b is 50% and Section C 70%

Therefore,

$\text{ Average mark of entire class } = \frac{ 40 \times 65 + 35 \times 50 + 25 \times 70 }{40 + 35 + 25 }\\\\\text{ Average mark of entire class } = \frac{2600 + 1750 + 1750}{100}\\\\\text{ Average mark of entire class } = \frac{6100}{100}\\\\\text{ Average mark of entire class } = 61$

Hence, the average marks of the entire class 10 standard is 61%

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