zarachoudhury64 zarachoudhury64

03-03-2021
Mathematics

contestada

There are 15 children at a birthday party.
The mean age of the 15 children is 7 years.
9 of the 15 children are boys.
The mean age of the boys is 5 years.
Work out the mean age of the girls.

Respuesta :

diorrvee diorrvee

03-03-2021

15x7=105 years
9x5=45 years for the boys
105-45=60 so 60years girls
60/6=10 60 years divided by the 6 girls
Mean is 10 years for girls

Answer Link

Otras preguntas

What factors about your audience should you keep in mind when writing an argument for a cause?

what is repeating and terminating

what things does the speaker of the "song of myself" describe as "not the me myself ?"

Will give brainliest, rating, and thanks! <3

Light wave is progressive wave.(True or False?)

BRAINLIESTTT ASAP!! 1. Which of the following is a part of both geocentric model and heliocentric model? Earth is the center of the solar system. The sun is t

Write as a product by factoring: ac^2 − ad +c^3 − cd − bc^2 + bd 10 points AND brainliest answer!!

Please help me solve this equation

I need help on this question plz

At a sale this week, a table is being sold for $486 . This is a 28% discount from the original price. What is the original price?