the average age of a group of person going for a picnic is 16 years. twenty new person with the average are of years joined the group on the spot. Due to that, the average age of the group became 15 half years. what is the number of persons initially going for the picnic.

Question

the average age of a group of  person going for a picnic is 16 years. twenty new person with the average are of years joined the group  on the spot. Due to that, the average age of the group became 15  half years. what is the number of persons  initially going for the picnic.

Accepted Answer

সঠিক উত্তর: 20। ব্যাখ্যা:

the average age of a group of person going for a picnic is 16 years. twenty new person with the average are of years joined the group on the spot. Due to that, the average age of the group became 15 half years. what is the number of persons initially going for the picnic.

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