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Mean is 50 Class mark frequency …

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Mean is 50 Class mark frequency 0-20. 17 20-40. f1 40-60. 32 60-80. f2 80-100. 19 Find the missing frequency I got 257= 3f1 + 7f2 After that wat we have to do ?

Posted by Yeshashwini Madhumitha 4 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Srishtika Murugan 4 years, 5 months ago

If they have given sum of frequency,then add the given frequencies and equate it.Then you will get another equation.So you have to solve the two equations to find the missing frequencies.

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CBSE > Class 10 > Mathematics