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Question id: 180. This question is similar to one that appeared in a GCSE Higher paper (specimen) for 2017. The use of a calculator is allowed.

A batch of coins is made from an alloy consisting of 270g of copper mixed with 90g of nickel.

- The density of copper is 9.0g/cm
^{3}. - The density of nickel is 8.9g/cm
^{3}.

(a) Work out the volume of copper used in the alloy.

(b) What is the density of the alloy to three significant figures?

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