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 Post subject: maths question ..help !Posted: Mon Jan 30, 2012 7:58 pm

Joined: Mon Mar 16, 2009 1:31 pm
Posts: 182
11 dogs eat 22 tins of dog food in 6 days, how many tins of dog food would 8 dogs eat in 5 days ?

Need help ASAP !

regards

FTM

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 8:05 pm

Joined: Fri Mar 17, 2006 5:12 pm
Posts: 1348
Location: Birmingham
Each dog eats 2 tins in 6 days

Therefore 1/3 tin per day per dog

Hence 8 dogs in 5 days eat 8 x 1/3 x 5

= 40 / 3

=13 and 1/3 tins = 14 tins rounding up

(depends if the question says how many tins would they eat or how many would you need to buy to feed 8 dog for 5 days - note the catch for the latter - can't buy 1/3 tin!)

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 8:06 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3826
To begin work out how many tins one dog would eat in 6 days.
11 dogs eat 22 tins so 1 dog eats 2 tins
1 dog eats 2 tins in 6 days
1 dog eats 1 tin in 3 days
1 dog eats 1/3 tin in 1 day
8 dogs eat 8/3 tin in 1 day (2 whole tins and 2/3 of a tin)

So 8 dogs eat 8/3 times 5 = 40/3 tins in 5 days. 13 1/3 tins.

I hope that is clearer than mud, brain is still in tax return mode.

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 8:28 pm

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 1002
Location: Birmingham
.....and here I was thinking I was the only one filing our tax returns today!

Yes, it is much clearer to keep counting in fractions right until the end.

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UmSusu

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 9:36 pm

Joined: Mon Mar 14, 2011 12:54 pm
Posts: 518
I've filed but not paid yet! Eek! Mustn't forget tomorrow!

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 10:02 pm

Joined: Mon Mar 16, 2009 1:31 pm
Posts: 182
thanx guys...both my hubby n I did the same thing ..him in decimals and me in fractions ...but DD insisted it was wrong as her "clever friend" had a whole number !

Phew ..threw me off more than tax returns ! Hmmm thinking of some of the bizzare things people claim expenses could start a whole new thread..............
FTM

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 10:06 pm

Joined: Mon Feb 14, 2011 1:42 pm
Posts: 1002
Location: Birmingham
Sorry FTM, I know we went off topic but I must gloat that just for once we are actually due a refund (without any 'creative' accounting).

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UmSusu

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 Post subject: Re: maths question ..help !Posted: Mon Jan 30, 2012 10:34 pm

Joined: Mon Mar 16, 2009 1:31 pm
Posts: 182

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