Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
An orchestra consists of 25 members. The youngest member is 32 years old. She leaves and is replaced by a new member who is 30 years old.
By how much does the replacement change the average age of the members of the orchestra?
 one year ago
 one year ago
An orchestra consists of 25 members. The youngest member is 32 years old. She leaves and is replaced by a new member who is 30 years old. By how much does the replacement change the average age of the members of the orchestra?
 one year ago
 one year ago

This Question is Closed

samhussainBest ResponseYou've already chosen the best response.0
hw did you get this answer
 one year ago

samhussainBest ResponseYou've already chosen the best response.0
someone can explain this
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.0
Let A = old average and B = new average The old average was found by dividing the sum of the ages S by 25 to get S/25 = A The new average is found by subtracting 32 from that sum S and adding in 30. Then you still divide by 25 (since you still have 25 people) (S32+30)/25 = B (S2)/25 = B S/252/25 = B A2/25 = B B = A  2/25 B = A  0.08 So B = A  0.08 which shows us that the average age decreased by 0.08 years
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.