Study the given bar-graph and answer the question that follows.
The bar-graph presents the number of books sold by a bookseller during different months of a particular year

The number of books sold in the month of December is how much less than the average number of books sold per month?

Correct option is B

Total number of books sold = 223 + 320 + 334 + 210 + 230 + 250 + 660 + 345 + 410 + 224 + 220 + 210 = 3636
Average number of books sold per month = 3636/12 = 303

Required Answer = 303- 210 = 93