Go to navigation
It is currently Fri Dec 09, 2016 11:42 am

All times are UTC




Post new topic Reply to topic  [ 4 posts ] 
Author Message
 Post subject: help with method please
PostPosted: Sat Apr 23, 2011 2:29 pm 
Offline

Joined: Thu Sep 30, 2010 8:03 am
Posts: 32
Help needed for BOND MATHS 4TH PAPER 11 QUESTION 41-43 please

A CASH BOX CONTAINS SOME COINS TO THE VALUE OF £5.25
THERE ARE TWICE AS MANY 5P COINS AS 2P COINS, AND TWICE AS MANY 2P COINS AS 1P COINS. HOW MANY 1P, 2P AND 5P COINS ARE THERE?

I would really appreciate help with the method for this ques as Ive been attempting it as a ratio 1:2:4 but no getting anywhere!
thanks


Top
 Profile  
 
PostPosted: Sat Apr 23, 2011 3:22 pm 
Offline

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8115
saimaj21 wrote:
Help needed for BOND MATHS 4TH PAPER 11 QUESTION 41-43 please

A CASH BOX CONTAINS SOME COINS TO THE VALUE OF £5.25
THERE ARE TWICE AS MANY 5P COINS AS 2P COINS, AND TWICE AS MANY 2P COINS AS 1P COINS. HOW MANY 1P, 2P AND 5P COINS ARE THERE?

I would really appreciate help with the method for this ques as Ive been attempting it as a ratio 1:2:4 but no getting anywhere!
thanks


I guess the best way is to look at the "minimum unit" that the coins would make up ie 1* 1p, 2*2p and 4*5p = 25p. So how many 25p's are there is £5.25? = 21

So I reckon there are 21*1p, 42*2p and 84*5p..... if it is wrong my excuse is that it has been very busy at work and brain is going squidgy.


Top
 Profile  
 
PostPosted: Sun Apr 24, 2011 11:17 am 
Offline

Joined: Thu Sep 30, 2010 8:03 am
Posts: 32
Thank you for your reply....i think your method is soooo appropriate for 11 yr olds! thanks alot for that-
there is another similar question though...
Scott has 1/3 as many computer games as Anish, and Anish has 1/2 as many games as Nick. Together they have 140 games how many do each have?

answer: 84, 42, 14

thanks, help much appreciated


Top
 Profile  
 
PostPosted: Sun Apr 24, 2011 11:29 am 
Offline

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8115
saimaj21 wrote:
Thank you for your reply....i think your method is soooo appropriate for 11 yr olds! thanks alot for that-
there is another similar question though...
Scott has 1/3 as many computer games as Anish, and Anish has 1/2 as many games as Nick. Together they have 140 games how many do each have?

answer: 84, 42, 14

thanks, help much appreciated


Again it is finding a lowest common multiple of 3 and 2 and 1 eg 6.
So Nick has 6 games, Anish 3 games and Scott 1 game.
So 6+ 3 + 1 = 10.
So how many times does 10 go into 140? = 14
hence the answers are as given 1*14=14, 3*14=42 and 6*14 = 84


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 4 posts ] 

All times are UTC


Who is online

Users browsing this forum: No registered users and 1 guest


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