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 Post subject: help with method pleasePosted: Sat Apr 23, 2011 2:29 pm

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

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 Post subject: Re: help with method pleasePosted: Sat Apr 23, 2011 3:22 pm

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8598
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.

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 Post subject: Re: help with method pleasePosted: Sun Apr 24, 2011 11:17 am

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?

thanks, help much appreciated

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 Post subject: Re: help with method pleasePosted: Sun Apr 24, 2011 11:29 am

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8598
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?

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

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