Answer: (C) 5
Step-by-step explanation:
To find the percentage of classmates who chose soccer lets add the percentage of all the other sports and substract it by 100.
So,
100 - (10 + 10 + 10 + 30 + 15)
100 - 75
= 25
Now, we have to find out how many classmate chose football over soccer.
For this we have to substract the percentage of classmates who chose soccer (25) from the percentage of classmates who chose football(30)
30 - 25
= 5
Thus, the answer is 5.
