Final answer:
Out of 30 students, 10 play sports since 1/3 of 30 is 10. Of those, 2/5 play soccer, which results in 4 students who play soccer.
Step-by-step explanation:
To determine how many students play soccer, we need to first calculate how many students play sports and then find out how many of those play soccer specifically.
Given that 1/3 of the 30 students play sports, we multiply 1/3 by 30, which gives us 10 students who play sports. Next, we know that 2/5 of those who play sports also play soccer. So, we multiply 2/5 by 10, resulting in 4 students who play soccer.