Answer:
The answer is 5 g/cm³
Step-by-step explanation:
The density of a substance can be found by using the formula

From the question
The mass of one brick is 50 g
the volume of one brick is 10 cm³
Since the student had 5 bricks
Total mass = 5 × 50 = 250 g
total volume = 5 × 10 = 50 cm³
So the total density is

We have the final answer as
5 g/cm³
Hope this helps you