Hey! Sign in to get help with your study questionsNew here? Join for free to post

maths simultaneous equ.

Announcements Posted on
How proud of your uni are you? Take our survey for the chance to win a holiday! 09-02-2016
  1. Offline

    ReputationRep:
    4. Marina had $24500 to invest. She divided the money into three different accounts. At the end of the year, she had made $1300 in interest. The amount of money yield on each of the three accounts was 4%, 5.5% and 6%. If the amount of money in the 4% account was four times the amount of money in the 5.5% account before interest was added, how much had she placed in each account? (Please start your solution with the account with the least amount)

    anshe placed $ , $ and $ in each of the three accounts.


    hello anyone knws how to do this pls help me!!
  2. Offline

    (Original post by KULER)
    ...
    Let $x be the amount of money in the 4% a/c.

    Work out how much is in each of the other accounts in terms of x.

    Then work out the interest in terms of x.

    Equate it to $1300 and solve.

    Post some working if you get stuck.

    @everyone else. If you're thinking of posting a fully worked solution, please read the forum guidelines first.
  3. Offline

    ReputationRep:
    (Original post by ghostwalker)
    @everyone else. If you're thinking of posting a fully worked solution, please read the forum guidelines first.
    I'm finding it hard to participate any more as, 2 minutes after I offer a hint which is perfectly sufficient to move the poster on, someone else comes along and posts a full (or almost) full solution.
  4. Offline

    ReputationRep:
    (Original post by Mr M)
    I'm finding it hard to participate any more as, 2 minutes after I offer a hint which is perfectly sufficient to move the poster on, someone else comes along and posts a full (or almost) full solution.
    ditto


    not always a correct one either

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: April 7, 2012
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR

Student Money Week continues...

Find out which Q&As are happening today

Poll
How should university tuition be funded?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read here first

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups
Study resources
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.