In a class of 60 students the average marks of the students who passed the test is 6.7 and the students who failed the test is 3.6. The total marks secured by the entire class were 340. Find the no. of students who passed and fail in the class test

Dear Student 

Let assume no. Of Student who failed in exam = y
Toal marks of entire class = average marks of failed students × no. Of failed students + Average marks of passed student × no. of passed students

340 = 3.6 × y + 6.7 × (60-y)
340= 3.6y +402 - 6.7y
​​3.1y = 62
y = 20


No. Of students who failed in class test = 20 students 
No. Of students who passed in exams = 60-20 = 40 students 

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