Question

the average weight of 39 students is 15 kg the weight of 14th student is 39 more than the average weight of 40 students find weight of 40 student​

Answer 1

Answer:

Step-by-step explanation:

I think, in the question it will be the weight of the 40th student

So,

Average weight of 39 students = 15 kg

Total weight of 39 students = 15*39 kg = 585 kg

Average weight of 40 students = x kg (let)

Total weight of 40 students = 40x kg

Hence, weight of 40th student = (39 + x)kg

A.T.P.

weight of 40th student = weight of 40 students- weight of 39 students

39 + x = 40x - 585

39x = 585+39

x = 16

Thus, weight of 40 students = 40 * 16 = 640 kg

weight of 40th student = 16 kg

Answer 2

Answer:

Step-by-step explanation:

I think, in the question it will be the weight of the 40th student

So,

Average weight of 39 students = 15 kg

Total weight of 39 students = 15*39 kg = 585 kg

Average weight of 40 students = x kg (let)

Total weight of 40 students = 40x kg

Hence, weight of 40th student = (39 + x)kg

A.T.P.

weight of 40th student = weight of 40 students- weight of 39 students

39 + x = 40x - 585

39x = 585+39

x = 16

Thus, weight of 40 students = 40 * 16 = 640 kg

weight of 40th student = 16 kg