Common Information
Six friends — Anand, Bimal, Praveen, Kiran, Yashwanth and Rohan — availed a new SMS offer, according to which there will be no charges for the SMSs sent or received within the group. The following pie charts pertain to the details regarding the number of SMSs sent by these persons within the group during the month of October.
The first pie chart gives the breakup of total number of SMSs received by Anand from his five friends in October according to the friend from whom he received the SMSs and the second pie chart gives the breakup of the total SMSs sent by these five persons within the group (i.e., excluding Anand) in the same month according to the person sending the SMSs.
Assume that SMSs sent are received instantly and also the number of SMSs sent by each person is always an integer. For all the following questions, consider only the SMSs sent by the persons within the group in the month of October.
Q16. 
Common Information Question: 1/4 What is the least possible value of $N$? 
A.  3,000 

B.  3,750 

C.  3,800 

D.  4,000 
Q18. 
Common Information Question: 3/4 Additional information for questions 18 and 19: It is also known that at least 25% of the SMSs sent by Bimal are to Anand and at most 40% of the SMSs sent by Yashwanth are to Anand. What is the maximum possible number of persons who have sent more than 80% of their SMSs to Anand? 
A.  1 

B.  3 

C.  4 

D.  5 
Q19. 
Common Information Question: 4/4 Additional information for questions 18 and 19: It is also known that at least 25% of the SMSs sent by Bimal are to Anand and at most 40% of the SMSs sent by Yashwanth are to Anand. Which of the following can be the value of $x$, if $x%$ of the SMSs sent by Kiran are to Anand? 
A.  30 

B.  40 

C.  50 

D.  None of these 
Common Information
Answer the questions on the basis of the information given below.
The following PieChart provides information about the marks obtained by six students A, B, C, D, E and F in four different subjects P, Q, R and S. The marks obtained by each of the students in subject P is indexed to the maximum marks that can be obtained in subject P. This holds true for the other three subjects as well.
For example, if the maximum marks that can be obtained in subject P is ‘40k’, then the marks obtained in subject P by student A is 15k, by student B is 20k and so on. This holds true for the marks obtained by the students in the other three subjects as well.
The marks obtained by A in subject P is not less than that obtained by him in subject Q or subject R, but not more than that obtained by him in subject S. This holds true for the marks obtained by each of the other 5 students as well.
Q20. 
Common Information Question: 1/5 If the marks obtained by A in subjects Q and R is the same, then the maximum marks that can be obtained in subject Q as a percentage of the maximum marks that can be obtained in subject R is: 
A.  $50/3$ 

B.  $250/3$ 

C.  $100/3$ 

D.  $25$ 