Question

In a class of 27 student at least one of the student do chemistry and biology offer chemistry while 18 do biology find :those who offer biology only, those who offer chemistry only, those who offer both subject

Answer 1

Please show all solving

Answer 2

Please show all solving I don't understand

Answer 3

Teach me

Answer 4

I don't still understand answer the question step by step so that I will write it down

Answer 5

27-18... idk what grade this is so it is most likely wrong

Answer 6

Please check your question for typos.
Draw a Venn diagram.
Some do ONLY chem
Some do ONLY bio
some do both.
the sum of only bio and only chem and both is 27
You do not give enough data to solve.
if 18 do ONLY bio, then 9 do either chem only or both
IF ONLY ONE does both
then 9 - 1 = 8 does ONLY Chem