Question

Average weight of 5 students in a class increases by 4 kg when weight of teacher is also included. If sum of average weight of 5 students and weight of teacher is 104 kg. Find the weight of teacher?

A 64 Correct Answer Incorrect Answer
B 60 Correct Answer Incorrect Answer
C 63 Correct Answer Incorrect Answer
D 65 Correct Answer Incorrect Answer
E 59 Correct Answer Incorrect Answer

Solution

Let the average weight of class be x. and weight of teacher be t. so, Total weight of 5 students = 5x Now, average weight is also included then, (5x + t)/6 = x + 4 5x + t = 6x + 24 t – x = 24 t = x + 24------(i) AQT, x + t = 104 2t – 24 = 104 t = 64

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