Question

There are 11 teachers who teach mathematics or physics in school. Of these, 7 teach

mathematics and 3 teach both subjects. How may teach physics?​

Answer 1

Answer:

4 teachers.

Step-by-step explanation:

7 maths teachers out of 11.

So it lefts us with 4 others out of which 3 teach both subjects so they must be teaching physics as well.And remaining 1 is a physics teacher.

So, final answer is 3 teachers(from both subjects)+ 1 physics.

Answer 2

Answer:

$\red{Q) \: There \: are \: 11 \: teachers \: who \: teach \: mathematics \: or \: physics \: in \: school. \: Of \: these, \: 7 \: teach \: </p><p></p><p> \: mathematics \: and \: 3 \: teach \: both \: subjects. \: How \: may \: teach \: physics \: ?}$

Given :-

Total Number of Teachers = 11 Those who Teach Math and Physics

Number of Math Teachers = 7 teachers

Number of Physics teachers = ?

Number of teachers who teach both math and Physics = 3

¤ 11= 7+3

7+3=10

${\therefore {\huge\pink{Number \: of \: Physics \: Teachers \: =3+1}}}$

$\green{ \frak4} = \: \: \: total \: no.of \: \color{cyan}physics \: teachers$

where 3 Teachers Teach Both Physics and Math

But 1 Teacher Teach Only Physics

Step-by-step explanation:

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