a school has 9 English 7 history and 6 geography teachers each teacher can teach 2 subjects max what is he minimum number of teachers required  Choose the correct choice:
A) 7  B) 8  C) 9  D) 10  E) 11

Rationale: total subjects = 9 + 7 + 6 = 22 max subjects by 1 teacher = 2 so , min of teachers required = 22 / 2 = 11 answer : e
Answer: E