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 Post subject: A Maths Question!Posted: Wed Dec 10, 2008 6:11 pm

Joined: Mon Nov 26, 2007 4:14 am
Posts: 138
Location: Middlesex
We are a bit confused about following question:

A box of chocolates contains 20 chocolates of which 8 are plain chocolates. If 16 of the 20 have soft centres, what can you say about how many plain chocolates there are with soft centres?

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 Post subject: Posted: Wed Dec 10, 2008 6:15 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11954
20 - 16 = 4

There are at least 4 plain chocolates with soft centres I think!

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 Post subject: Posted: Wed Dec 10, 2008 6:16 pm

Joined: Mon Feb 20, 2006 1:29 pm
Posts: 1805
Location: Berkshire
I would say at least half of the dark chocs (4) will have soft centres.

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 Post subject: Posted: Wed Dec 10, 2008 6:23 pm

Joined: Mon Nov 26, 2007 4:14 am
Posts: 138
Location: Middlesex
I think this is a ratio question. 16:20 or 4:5 of 20 is soft chocolates. What is 4:5 of 8? I think it can be rephrased as 4/5th of 8!

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 Post subject: Posted: Wed Dec 10, 2008 6:31 pm

Joined: Mon Nov 26, 2007 4:14 am
Posts: 138
Location: Middlesex
4:5 of 8= 4/5 x 8= 32/5= 6.4 which rounds up to 6. Am I right???

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 Post subject: Posted: Wed Dec 10, 2008 7:36 pm

Joined: Mon Feb 12, 2007 1:21 pm
Posts: 11954
Sorry I don't think you can approach this with ratio -

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 Post subject: Posted: Wed Dec 10, 2008 8:53 pm

Joined: Fri Sep 15, 2006 8:51 am
Posts: 8117
there will be a minimum of 4 and maximum of 8 plain chocolates with soft centres

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 Post subject: Re: A Maths Question!Posted: Wed Dec 10, 2008 11:32 pm

Joined: Fri Jul 06, 2007 8:31 pm
Posts: 1192
My guess

At least 4 of the plain chocolates have soft centers.

Regards
SVE

_________________
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 Post subject: Re: A Maths Question!Posted: Thu Dec 11, 2008 8:54 am

Joined: Thu Oct 11, 2007 11:51 am
Posts: 14
We are a bit confused about following question:

A box of chocolates contains 20 chocolates of which 8 are plain chocolates. If 16 of the 20 have soft centres, what can you say about how many plain chocolates there are with soft centres?

2/5 of the box are plain chocolates and 4/5 are having soft centres and according to the ratio 2/5 divided by 4/5 are the soft centred chocolates which are nothing but 1/2 of the plain that means 1/2x8=4.

so 4 are soft centred chocolates.

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 Post subject: Re: A Maths Question!Posted: Thu Dec 11, 2008 5:16 pm

Joined: Mon Nov 26, 2007 4:14 am
Posts: 138
Location: Middlesex
naga wrote:
We are a bit confused about following question:

A box of chocolates contains 20 chocolates of which 8 are plain chocolates. If 16 of the 20 have soft centres, what can you say about how many plain chocolates there are with soft centres?

2/5 of the box are plain chocolates and 4/5 are having soft centres and according to the ratio 2/5 divided by 4/5 are the soft centred chocolates which are nothing but 1/2 of the plain that means 1/2x8=4.

so 4 are soft centred chocolates.

You are right. 4 is the answer. I was wrong and reading too much into it!

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