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07 Mar 2022, 09:36
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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88% (01:33) correct
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The average weight of a class of 44 students is 36 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?
A. 81 kg
B. 73 kg
C. 63 kg
D. 45 kg
E. 37 kg
A. 81 kg
B. 73 kg
C. 63 kg
D. 45 kg
E. 37 kg
07 Mar 2022, 10:03
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Bunuel
The average weight of a class of 44 students is 36 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?
A. 81 kg
B. 73 kg
C. 63 kg
D. 45 kg
E. 37 kg
\((44+1)(36+1) - 44*36 = t\)A. 81 kg
B. 73 kg
C. 63 kg
D. 45 kg
E. 37 kg
Or, \(t = 1665 - 1584\)
So, \(t = 81\), Answer must be (A)
07 Mar 2022, 10:52
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Total weight excluding teacher = 44*36 = 1584
Total weight including teacher = 45*37 = 1665
Teacher's weight = 1665 - 1584 = 81
Answer A
Total weight including teacher = 45*37 = 1665
Teacher's weight = 1665 - 1584 = 81
Answer A
