1700 students took an exam 85% students passsed it. Find the number of students who failed in the exam.

100 students appeared in annual exami-nation. 60 students passed. The ratio of the number of students who failed to the total number of students is

The average marks of 120 students are 35 . If the average of passed students was 39 and failed students was 15 , then find the number of students who have passed .

In an examination,30% and 35% students respectively failed in History and Geography while 27% students failed in both the subjects. If the number of students passing the examination is 248, find the total number of students who appeared in the examination.380 b.400 c.425 d.725

In an examination 70% students passed both in Mathematics and Physics, 85% passed in Mathematics and 80% passed in Physics. If 30 studetns have failed in both the subjects , then the total number of students who appeared in the examination is equal to

4.In a class of 36 students,1/3 of the students scored A in mathematics exam,1/2 of them scored B and the rest scored C .Find the numbers of students who scored C in mathematics exam.