Question

Please help! The two way-table shows the number of students in a school who like mathematics and/or physics.

Answer 1

I think the answer is B.) 15 

If you look at the number of students who like mathematics but not physics, that's 5 students.
Then we see that 20 students like physics but not mathematics. 
So there's 15 more students

Answer 2

Answer:  B- 15

Step-by-step explanation:

From the given two way-table , then number of students in a school who like mathematics = 20

The number of students in a school who like physics = 35

The number of students in a school who like mathematics and physics = 15

Now, the number of students like only Physics = $35-15=20$

The number of students like only Mathematics= $20-15=5$

Thus, the number of  students like physics than mathematics will be :-

$20-5=15$