Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

How much younger is the new member, compared to the old member? The average age of a 10-members committee is the same as it was 4 years ago, because an old

member has been replaced by a young member.



This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let present age of old member = x
let present age of new member = y
need to find (x-y)
let sum of present age of rest members = a

Since present average of 10 members are same as it was 4 years earlier,
y+a = (x-4)+(a-9*4)
⇒ y + a = x + a - 40
⇒ x+a -40 = y+a
⇒ x - y = 40

The new member is 40 years younger than the old member
1 5 1
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts