The average monthly income of P and Q is Rs. 5050. The average monthly income of Q and R is Rs. 6250 and the average monthly income of P and R is Rs. 5200. The monthly income of P is:

A.
3500
B.
4000
C.
4050
D.
5000

• Answer:(B)
  Solution:
  P+Q=5050*2=10100 ------------(1)
  Q+R=12500 -------------(2)
  P+R=10400 --------------(3)
  solve (1) and (2)
  we get
  P-R=-2400 ----------(4)
  solve (3) and (4)
  P's income= 4000
• 13 years agoHelpfull: Yes(5) No(0)
• B. 4000
  P = 4000, Q = 6100, R = 6400
  So, P+Q/2 = 10100/2 = 5050
  Q+R/2 = 12500/2 = 6250
  P+R/2 = 10400/2 = 6200
• 13 years agoHelpfull: Yes(2) No(2)