In a class when test is conducted , mean of 25 marks is 60. If the mean of first 13 students is 70
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49.17
Step-by-step explanation:
In a class when test is conducted , mean of 25 marks is 60. If the mean of first 13 students is 70
mean of 25 students mark is 60
=> total marks = 25 * 60 = 1500
mean of first 13 students is 70
=> Score of 13 Students = 13 * 70 = 910
Score of remaining 12 Students = 1500 - 910 = 590
mean of 12 students = 590/12 = 49.17
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