Answer: 21 % teachers are there who teach Maths but not English.
Explanation:
Since, According to the given table, total number of student who teach maths but not english = 22
And, total number of teachers = 104
Therefore, joint relative frequency for teachers who teach maths and not english = (total number of student who teach maths but not english/ total number of teachers) × 100
=

=

=21.1538461538 %
≈ 21 %
Therefore, Option (2) is correct.