The table shows the mass and melting point of some substances.


Melting Point of Substances
Mass
(kg) Melting Point of Tin
(°C) Melting Point of Lead
(°C)
1 W Y
2 232 327


Part 1: What will be the values of W and Y for 1 kg of each substance?
Part 2: Explain your answer for Part 1.
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