Demo Class#!#First Class

The ratio of boys and girls in a class is 5:3.20% of the boys and 60% of the girls have passed in first class. What percentage of the class has passed in first class ?

Ratio of First ,Second and Third Class train fares between two stations was 8:6:3 .First Class and Second Class train fares are reduced by 1/6 and 1/12 repectively .Ratio of no of passengers in first, second and third class in a year is 4:9:24 .From a stattion total sale of ticket of Rs. 355600 .First the amount collected from first class .

How many students passed in first class ? Statements: I. 85% of the students who appeared in examination have passed either in first class or in second class. II. 750 students have passed in seond class. III. The number of students who passed in first class is 28% of those passed in second class.

In a class-X of 30 students, 24 passed in first class , in another class Y of 35 students, 28 passed in first class. In which class was the percentage of students first class more?

In a class A of 25 students,20 passed in first class; in another class B of 30 students,24 passed in first class.In which class was a greater fraction of students getting first class?

A class has 30 students. The followign prizes are to be awarded to the students of the class- first and second in mathematics, first and second in Physics, first in Chemistry and first Biology. If N denote the number of ways in which this can be done, then