A grocer has a sale of Rs. 800, Rs. 900, Rs. 1000, Rs. 700 and Rs. 800 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 850?
Choose the correct choice
A) s. 440 B) s. 850 C) s. 450 D) s. 900 E) s. 950
Total sale for 5 months = Rs. (800 + 900 + 1000+ 700 + 800) = Rs. 4200   Required sale = Rs. [ (850 x 6) - 4200 ]   = Rs. (5100- 4200)   = Rs. 900.   Option s. 900
<result>D</result>
A grocer has a sale of Rs. 800, Rs. 900, Rs. 1000, Rs. 700 and Rs. 800 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Rs. 850?