Sixty students appeared in the physics and math paper of an examination. Of these 60% students passed in physics and 70% passed in math. What is the maximum percentage of students who failed in both the subjects?
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No. of students appears in maths examination is 60.
Students passed in math examination is60%
therefore, percentage of students failed in maths examination is 100-60=40%
similarly, No. of students appear in physics is 60
students passed in physics is 70%
therefore, percentage of students failed in physics is 100-70=30%
so that, the maximum percentage of students who failed in both subject is 40+30=70%
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