A grocer has a sale of Rs. 2500, Rs. 6500, Rs. 9855, Rs. 7230 and Rs. 7000 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 7500?  Choose the correct choice from the following answers.
A) s. 49180  B) s. 49910  C) s. 11915  D) s 6997  E) s. 5000
Total sale for 5 months = Rs. (2500 + 6500 + 9855 + 7230 + 7000 ) = Rs. 33085.   Required sale = Rs. [ (7500 x 6) -33085]   = Rs. (45000 - 33085)   = Rs. 11915.   s. 11915
<result>C</result>
A grocer has a sale of Rs. 2500, Rs. 6500, Rs. 9855, Rs. 7230 and Rs. 7000 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 7500?