In an examination,60 candidates passed science or maths.if 15 passed both subjects and 9 more passed maths than science, find the number of people who passed maths and science, probability that a candidate passed exactly one subject.

14 answers

If x passed science. then x+9 passed math. Now you know that
x + x+9 - 15 = 60
x=33
Then 18 passed only science, and 27 passed only math.
So P(only one subject) = (18+27)/60 = 45/60 = 3/4

That's the general way to solve this. Usually you have to figure out how many passed both (or all three, or whatever). In this case, there's a shorter way.
60 passed something
15 passed both, so
60-15 = 45 passed only one.
So please what the percentage of candidates who passed exactly one subject
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Thanks
I dont know but pls whenever someone is trying to explain make the details clear enough thank you
Pls and also draw the venn diagram to make it more clear thank you
In an examination, 60 candidate
Please can you do the work and the take a picture of it for me to see cause I still don't understand please
Please I don't understand it
Pls draw the Venn diagram and solve it for as all to understand please so it now it was given to me as homework please do it now please
Solve it clearly and draw it on a venn diagram
I NOW GET IT. THANK YOU.
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