+51
Maria and Edwin have $23.00 each to spend at a book fair, where all students receive a 25% discount. They both want to purchase a copy of the same book, which normally sells for $26.50 plus 10% sales tax. To check if she has enough to purchase the book, Maria takes 25% of $26.50 and subtracts that amount from the normal price. She takes 10% of the discounted selling price and adds it back to find the purchase amount. Edwin takes 75% of the normal purchase price and then computes 110% of the reduced price. Is Maria correct? Is Edwin correct? Do they have enough money to purchase the book? Explain your answer using complete sentences.
+129901
Maria's calculation of the final price
Discounted price + 10% of discounted price
[26.50 - .25(26.50)] + .10 [26.50 - .25(26.50)] ≈ $21.87
Edwin's calculation of the final price
75% of price * 110%
[26.50 (75)] (1.10 ) ≈ $21.87
Both methods result in the exact same amount !!!!
