Question

out of a total of 10 students, the average weight of 9
students is 60kg. If the weight of the 10Students
is 9 kg more than the average weight of all the 10
students, then the weight of 10 student would be
​

Answer 1

Answer:

Step-by-step explanation:

Average =  $\frac{Total \ weight}{number \ of \ students}$

60 = $\frac{k}{9}$ ; ( let k be the total weight of 9 students )

k = 540

let average weight of 10 students be q

then weight of 10th student = q+9

then from question

q = $\frac{540 + q+9}{10}$

10 q = 540 + q + 9

9q = 549

q = 61

weight of 10th student = 61 + 9 = 70 ans

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