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
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.
Similar Questions
The average weight of a class of 33 students is 47 kg. If the weight of the teacher is included, then the average weight of the class increases by 1 kg. What is the weight of the teacher?
Select the correct answerThe average weight of 20 students in aclass is increased by 1.8kg when one of the students, who weights 45kg is replaced by a new student. What is the weight of the new student?Options70 kg81kg63 kg51 kg77 kg
The average weight of 30 students is 45 kg. 15 students whose average weight is 48 kg left the class and 10 students whose average weight is 50 kg joined the class, and then find the new average weight of the students in the class.a45.2b45.4c45.6d45.8
The mean weight of a class of 39 students is 40 kg. When a new student is admitted, the mean weight decreases by 200 g. Find the weight of new student.
Select the correct answerConsider a class of 40 students whose average weight is 40 kgs. m new students join this class whose average weight is n kgs. If it is known that m + n = 50, what is the maximum possible average weight of the class now?radio_button_unchecked40.18radio_button_unchecked40.56radio_button_unchecked40.67radio_button_unchecked40.49
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.