Re: Apologies: Really easy problem.

<dzogchener@[EMAIL PROTECTED]
> wrote in message
news:de9d8f03-80df-432e-9a5f-04eb2a979a24@[EMAIL PROTECTED]
> I have been swatting up using a book I purchased, which has a question
> about area:
>=20
> How much will it cost to build a wall round a house that is 25 metres
> long and 75 metres wide, if the cost of 50 cm is #10? Your options are
> A) #4,000, B) 40,000 or C) #400.  The answers are meant to be
> estimations,
>=20
> What is the answer? I have calculated the answer, but when I checked
> it I found I was wrong, but I cannot get the supposed answer.  I am
> trying to just work out if the book is wrong or not.

One of the given answers is correct.
Can you show us your calculations?