Question

Oscar and Kim have $22.00 each to spend at a book fair, where all students receive a 30% discount. They both want to purchase a copy of the same book, which normally sells for $28.50 plus 10% sales tax. To check if he has enough to purchase the book, Oscar takes 30% of $28.50 and subtracts that amount from the normal price. He takes 10% of the discounted selling price and adds it back to find the purchase amount. Kim takes 70% of the normal purchase price and then computes 110% of the reduced price. Is Oscar correct? Is Kim correct? Do they have enough money to purchase the book? Explain your answer using complete sentences and show your work.

Answer 1

Oscar is correct.

Explanation:

Oscar is correct because,

.3*28.50= 8.55

28.50-8.55= 19.95

19.95*.10= 1.99

19.95+1.99= 21.94

They will have enough money for the book with 6 cents left

Answer 2

Oscar is correct because,
.3*28.50= 8.55
28.50-8.55= 19.95
19.95*.10= 1.99
19.95+1.99= 21.94
They will have enough money for the book with 6 cents left