Question

The mean marks of 10 students in a subject is 62 if marks of 9 students are 59, 45, 75, 60, 81, 56, 43, 35, 85 find the marks of 10th student

Answer 1

let the mark of 10th student be x
mean= 59+45+75+60+81+56+43+35+85+x /10
= 62
539+x\10=62
539+x= 62×10=620
x = 620-539
x= 81
so mark of tenth student is 81
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Answer 2

Step-by-step explanation:

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