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he average weight of a class of 50 students is 30 Kgs. When the weight of the teacher is also included, the average weight increases by 1kg. What is the weight of the teacherQuestion 19Answera.81 Kgsb.76 Kgsc.86 Kgsd.71 Kgs

Question

he average weight of a class of 50 students is 30 Kgs. When the weight of the teacher is also included, the average weight increases by 1kg. What is the weight of the teacherQuestion 19Answera.81 Kgsb.76 Kgsc.86 Kgsd.71 Kgs

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Solution

The total weight of the 50 students is 50 students * 30 kg/student = 1500 kg.

When the teacher is included, the average weight increases to 31 kg. This is the average weight of 51 people (50 students + 1 teacher), so the total weight is 51 people * 31 kg/person = 1581 kg.

The weight of the teacher is therefore 1581 kg (total weight with teacher) - 1500 kg (total weight of students) = 81 kg.

So, the answer is a. 81 Kgs.

This problem has been solved

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