Question
The average age of 6 students is 42 years. A new student
joins the group and the new average becomes 45 years. Find the age of the new student.Solution
Total age of 6 students = 6 × 42 = 252 Total age of 7 students = 7 × 45 = 315 Age of new student = 315 − 252 = 63 years
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