Question

in an examination 50 percentage of the student passed in mathematics and 70 percentage of students passed in Science while 10% of students failed in both subject 300 students passed in both the subjects find the total number of students who appeared in the examination if there two examination in only in 2 subjects​

Answer 1

Answer:

485

Step-by-step explanation:

If 50% students passed in math

out of 300

=50% of 300 is 150 (students)

If 70% students passed in science out of 300

= 70% of 300 is 275 (students)

If 10% students failed in both subject

means

= 10% of 300 is 30 (students)

in both subject 30 + 30 = 60

=150 + 275 + 60

= 485

So, total 485 students participate in examination