A grocer has a sale of Rs . 6,927 , Rs . 6,855 , Rs . 7,230 , Rs . 6,435 and Rs . 6562 for 5 consecutive months . How much sale must he have in the sixth month so that he gets an average sale of Rs . 6,500 ?
1
Rs . 4,991
2
Rs . 5,991
3
Rs . 6,001
4
Rs . 6,991
5
None of the above