Go to navigation
It is currently Sat Dec 03, 2016 11:33 am

All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: Fraction question
PostPosted: Fri Oct 10, 2014 8:57 pm 
Offline

Joined: Thu Mar 17, 2011 12:58 pm
Posts: 92
Hello all,
Please can you help me with this question and the method. Thank you.

I have a cake. One friend takes 2/7 of the cake and another takes 1/4. The third friend takes 1/3 of what is left. What fraction am I left with?

The answer we worked out was 61/84. Please verify my answer. Thanks again!


Top
 Profile  
 
 Post subject: Re: Fraction question
PostPosted: Fri Oct 10, 2014 9:03 pm 
Offline

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11931
2/7 + 1/4 = 8/28 + 7/28 = 15/28 eaten

so the third person eats 1/3 of what is left (1 - 15/28 =13/28) so 2/3 is left i.e. 2/3 x 13/28 = 26/84 = 13/42

The question is not worded well as I've assumed the '1/4' is of the original.


Top
 Profile  
 
 Post subject: Re: Fraction question
PostPosted: Sat Oct 11, 2014 2:01 pm 
Offline

Joined: Thu Mar 17, 2011 12:58 pm
Posts: 92
Thank you guest55. Yes, I do agree that the question is not very well worded.

DS worked out as 2/7 taken, so 5/7 was left over. Then out of the remaining 3/7 again 1/4 was taken which leaves a left over of 3/28. Again 1/3 of the remaining 3/28 was taken which leaves a left over of 61/84.

But as you explained, that could be the right answer. Many Thanks!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 2 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
CALL 020 8204 5060
   
Privacy Policy | Refund Policy | Disclaimer | Copyright © 2004 – 2016