Go to navigation
It is currently Fri Dec 09, 2016 1:55 am

All times are UTC




Post new topic Reply to topic  [ 3 posts ] 
Author Message
PostPosted: Sun Sep 08, 2013 6:50 pm 
Offline

Joined: Thu Aug 29, 2013 8:33 am
Posts: 20
Hi need help with this question.
Can someone tell a technique for such sort of questions.
The total of 2 amounts is £12 and their difference is £3.60.Find the 2 amounts.


Top
 Profile  
 
PostPosted: Sun Sep 08, 2013 6:55 pm 
Offline

Joined: Sun Aug 18, 2013 4:17 pm
Posts: 50
Good evening,

You would need to substract £3.60 from £12 - which leaves you with £8.40
Then divide £8.40 by 2 = £4.20

One of the amount is £4.20
The other amount is £4.20 + £3.60 = £7.80


Top
 Profile  
 
PostPosted: Tue Sep 10, 2013 11:03 am 
Offline

Joined: Mon Aug 12, 2013 9:13 am
Posts: 452
Option 1: Hit n trial
Pros - you will get the answer eventually
Cons - it may take lot of tries and may eat up precious time

Option 2: Algebra (my recommendation)
Pros - you will get the answer in couple of steps for even complicated equations
Cons - you need to be versed with simultaneous equations

x + y = 12
x - y = 3.60 (do addition of equations)
-------------------
2x + 0 = 15.60
x = 15.60/2 = 7.80
y = 12-7.80 =4.20

FYI - this is a very simple scenario. I have seen examples in private papers where one has to multiply equation 1 by a number and equation 2 by another number before solving.


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