Math, asked by naveenmalviya24, 1 year ago

In a group there are 20 girls, whose average age is decreased by 3 months, when one girl
aged 15 years is replaced by a new girl. What is the age of new girl?

Answers

Answered by sanjivkumar717p721mf

2

avg age decreased by 3 months.
so total age decreased for 20 girl= 20×3= 60month= 5 year
so the age of new girl would be 15-5= 10 years.

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