A company employs 400 salespeople. Of these, 83 received a bonus last year, 100 attended special training program at the beginning of last year, and 42 both attended the special sales training and received a bonus. (Note: Bonus was based totally on sales performance.) 

1. What proportion of the 400 sales people received a bonus last year?

2. What proportion of the 400 sales people attended the special sales training program at the beginning of last year?

3. What proportion of the 400 sales people both attend the special sales training program and received a bonus?

4. What proportion of the salespeople who attended the special sales training program received a bonus?

5. What proportion of the 400 salespeople did not attend the sales program and did not receive a bonus?