Question

In school there are 20 teachars who teach mathematices or physics of thise 12 teach mathematies 24 teach both physies and mathemathies how many teach physics

Answer 1

Answer:

Step-by-step explanation:

number of teachers teaches both maths and physics =24

Number of teachers teaches only maths =12

Number of teachers teaches maths or physics =20

i.e. MUP=24, M=12 , MΔP=20

Then according to formula

MUP = M+N-MΔP, we have

20=12+P-12

P=32