### Solution(By Apex Team)

Cost price of each book, $=\frac{3200}{40}$ = Rs. 80. Now, Selling Price of 40 books = CP of 40 books + SP of 8 books. Selling Price of 40 books – SP of 8 books = CP of 40 books. SP of 32 books = Rs. 3200 SP of 1 book $=\frac{3200}{32}$ = Rs. 100. So, Selling price of one dozen (12) book = 12 × 100 = Rs. 1200

## Related Questions on Profit and Loss

A. 45 : 56
B. 45 : 51
C. 47 : 56
D. 47 : 51

A. Rs. 2600
B. Rs. 2700
C. Rs. 2800
D. Rs. 3000

### A sells an article to B at a profit of 10% B sells the article back to A at a loss of 10%. In this transaction:

A. A neither losses nor gains
B. A makes a profit of 11%
C. A makes a profit of 20%
D. B loses 20%