Question

the mean weight of a class of 35 students is 45 kg , if the weight of the teacher be included the mean weight increases by 500 g .find the weight of the teacher

Answer 1

Given, The mean weight of a class of 35 students is 45. So,

Total weight of 35 students = 45×35 = 1575 kg

Now, weight of teacher is added. So,

Mean weight of 36 persons = 45kg + 500g = 45kg + 0.5 kg = 45.5 kg

Total weight of 36 persons(35 students + 1 teacher ) = 3645.5 = 1638 kg

Thus, Weight of the teacher =  Total weight of 36 Persons - Total weight of 35 students = 1638 - 1575 = 63 kg

Hence, weight of the teacher is 63 kg.

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Answer 2

Answer:

Step-by-step explanation:

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