During a donation drive week of school, students determined to donate an average sum of 8,000 on each working day of the School, collectively (there was no holiday in the donation week except Sunday) . From Monday to Friday, they collected Rs. 7,230, Rs. 6,435, Rs. 6,927, Rs. 6,855, and Rs. 6,562, respectively. How much they must collect on Saturday to meet their target?

Correct option is B

Total estimated amount 8000 × 6 = Rs 48000
Total received amount (7230 + 6435 + 6927 + 6855 + 6562) = Rs 34009
So
To get the estimated result he has to collect 48000 - 34009 = Rs 13991