A grocer has a sale of Rs. 2500, Rs. 4000, Rs. 3540 for 3 consecutive months. How much sale must he have in the fourth month so that he gets an average sale of Rs. 2890?
Choose the correct option:
A) Rs.3500  B) Rs. 1520  C) Rs. 4996  D) Rs. 4000  E) Rs. 900
Total sale for 5 months = Rs. ( 2500 + 4000 + 3540) = Rs. 10040.   Required sale = Rs. [ (2890 x 4) -10040 ]   = Rs. (11560 - 10040)   = Rs. 1520.   Rs. 1520)
<result>B</result>
A grocer has a sale of Rs. 2500, Rs. 4000, Rs. 3540 for 3 consecutive months. How much sale must he have in the fourth month so that he gets an average sale of Rs. 2890?