4. A shop-keeper places two identical blocks of cheese on a set of scales and
notices that their combined mass is 240 g. Each block measures 2.0 cm x 5.0 cm
x 10.0 cm.
240
What is the density of the cheese?
A 42 g/cm³ B 0.83 g/cm³ C 1.2 g/cm³ D 24 g/cm³