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 Post subject: IPS Maths Book D Paper 3, question 27Posted: Thu Jul 24, 2008 12:17 pm

Joined: Wed Jul 23, 2008 12:07 pm
Posts: 167
Hi,

The question is :
Mrs Davison buys a map of Ireland. It is drawn to the scale of 1 : 500, 000.

What distance , in kilometres is represented by 1cm on the map.

A = 5km. B = 500km, C = 50km, D = 5000 km, E = 500,000 m.

The book says the answer is B.

But :

Scales mean that 1 unit is represented by 500,000 units in this example. Hence 1 cm on the map is 500,000cm on the land. So 100 cm=1m, 1000 m = 1km meaning 100, 000 cm = 1 Km. So surely the answer is A : 5Km.

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 Post subject: Re: IPS Maths Book D Paper 3, question 27Posted: Thu Jul 24, 2008 12:46 pm

Joined: Tue Jan 01, 2008 1:05 pm
Posts: 515
za1 wrote:
Hi,

The question is :
Mrs Davison buys a map of Ireland. It is drawn to the scale of 1 : 500, 000.

What distance , in kilometres is represented by 1cm on the map.

A = 5km. B = 500km, C = 50km, D = 5000 km, E = 500,000 m.

The book says the answer is B.

But :

Scales mean that 1 unit is represented by 500,000 units in this example. Hence 1 cm on the map is 500,000cm on the land. So 100 cm=1m, 1000 m = 1km meaning 100, 000 cm = 1 Km. So surely the answer is A : 5Km.

You seem to be right. Indeed, if the correct answer was B, then e is correct also.

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 Post subject: Posted: Thu Jul 24, 2008 7:36 pm

Joined: Thu Feb 21, 2008 9:48 pm
Posts: 57
I agree the correct answer is A. The answer in the workbook- i.e B is incorrect

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