Three bells ring at interval of 36 seconds, 40 seconds and 48 seconds respectively. They start ringing together at a particular time. They will ring together after every

Let 0 < x < 1. Then the correct inequality is 

What is the ratio of average number of females from the organisations A, B and C to the average number of males from the organisations C, D and E?

Males from organisations A and B together form what percent of total number of males from organisations C, D and E together?

What is the ratio of the number of females from the organisations B and C to the number of males from the organisations D and E?

By how much percentage is the average number of females from all the organisations together is more than the number of males in organization 'D'?