Students of three different classes appeared in common examination. P…

Question

Students of three different classes appeared in common examination. Pass average of 10 students of first class was 70%, pass average of 15 students of second class was 60% and pass average of 25 students of third class…

Accepted Answer

Option D. 72%. Answer & Solution Answer: Option D Solution: & Sum\, of\, pass\, student\, \, first,\, second\, and\, third\, class, & = ( 70\% \, of\,10 ) + ( 60\% \, of\,15 ) + ( 80\% \, of\,25 ) & = 7 + 9 + 20 = 36 & Total\, students\, appeared, & = 10 + 15 + 25 = 50 & Pass\, average, & = 36…

Students of three different classes appeared in common examination. Pass average of 10 students of first class was 70%, pass average of 15 students of second class was 60% and pass average of 25 students of third class was 80% then what will be the pass average of all students of three classes?

Solution