Question

the average age of a class of 33 students is 13 years if one girl leave the classes the average become 12/15/16/yea​

Answer 1

Answer:

Let sum of ages of 33 students = x years Since average. Therefore , sum of ages of 33 students Total no . of students = 13 years ⇒ x 33 = 13 years ⇒ x = 33 × 13 = 429 Now , one girl leaves , so the average becomes 12 15 16 years .

Answer 2

Answer:

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