Question
The average number of sweets distributed in a class of
90 students is 6. If lsquo;xrsquo; number of students newly joined the class and the average becomes 5, and then find the newly joined students in the class?Solution
Let newly joined students be x, According to the question, 90 x 6 = (90 + x) x 5 540 = 450 + 5x 90 = 5x x = 18 The newly joined students in the class = 18
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