Answer:
Item B.
Explanation:
Density of item B
= mass / volume
= 87.5 / 5
= 17.5 g/cm^2 so it cannot be platinum.
The density if Items A and C are the same : 21 g/cm^2.
Density = Mass / volume
Problem B mass = 87.5 g and volume = 5 cm^3
Density = 87.5 / 5 = 17.5
This value is too low to be platinum
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