Question

Alex and Lara have $21.00 each to spend at a book fair, where all students receive a 35%; 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, Alex takes 35% 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. Lara takes 65% of the normal purchase price and then computes 110% of the reduced price. Is Alex correct? Is Lara correct? Do they have enough money to purchase the book? Explain your

Answer 1

Well Lara's way is correct. This is because if Lara were to remove 35% of 28.50 she would have 9.975, then if she were to add 10% she would have to pay only 10.97. If they were to do it Alex's way they would need to pay 38.90.

Answer 2

So if they were to do it Lara's way, they would have enough money, if they did it Alex's way they wouldn't.

Answer 3

Wait, sorry, I got the name placement wrong, just switch all the Lara's to Alex and all the Alex's to Lara.

Answer 4

ok thanks

Answer 5

No problem, I hope this has helped.

Answer 6

i hope it does to