Math, asked by debapriyapatnaik18, 11 months ago

In a class there are 40 boys and their average age is 16 years.on one boy aged 17 years leaving the class and another joining the average age becomes 15.875 years .the age of new boy:?solve the question using by allegation and mixture formula.​

Answers

Answered by TheLostMonk
2

Answer:

12 yrs

Step-by-step explanation:

(40×16 -17 + x)/40 = 15.875

623 + x = 635

x = 12 yr

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