A grocer has a sale of Rs. 5124, Rs. 5366, Rs. 5808, Rs. 5399 and Rs. 6124 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 5400? Choose the correct choice from the following answers:
A) 4079
B) 4579
C) 5579
D) 5679
E) 5779
Total sale for 5 months = Rs. (5124 + 5366 + 5808 + 5399 + 6124) = Rs. 27821.   Required sale = Rs. [ (5400 x 6) - 27821 ]   = Rs. (32400 - 27821)   = Rs. 4579.   ANSWER:4579
<result>B</result>
A grocer has a sale of Rs. 5124, Rs. 5366, Rs. 5808, Rs. 5399 and Rs. 6124 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 5400?