Question

Can someone help me out please :)

Students in a class sit two major exams.
75% of students pass the maths exam.
80% of those who pass
the maths exam
also pass the science exam. 40% of those
who fail the maths exam pass the science
exam. Find the probability that a student
chosen at random:
(b) fails both exams.
%​

Answer 1

15%

Explanation:

25% fail math

60% of the 25% above fail science

thus,

`(25)/(100) * 60\%`

=15% of total student