well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.
step-by-step explanation:
Answer from: Quest
(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1
Another question on Mathematics
Mathematics, 20.06.2019 18:04
Klein read 30 pages of a book on monday and 1/8 of the book on tuesday. he completed the remaining 1/4 of the book on wendesday. how many pages are there in the book?