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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 using complete sentences.
both methods of calculation give the same result, so both Alex and Lara are correct to figure out if they have enough money, calculate the cost of the book and see if it is below 21
is that the answer?
that's not the full answer, I told you to calculate the cost of the book
how do i calculate the cost of the book?
the original price of the book is 28.50, now calculate 65% of 28.50
check your math again
do i add, subtract, or divide?
65% of 28.50 = .65*28.50 = ?
good, now calculate 110% of 18.525
nope, not quite 1.10*18.525 = ?
good, now read the question again and tell me the answer
um.. i dont know... Both methods of calculation give the same result, so both Alex and Lara are correct. To figure out if they have enough money, we have to calculate the cost of the book and see if it is below 21. So first we do 65% of 28.50 = .65*28.50 = 18.525. Then we do 110% of 18.525 = 1.10 * 18.525= 20.3775. Thats all i got.. can you finish it off for me please :)
well, can Alex and Lara buy the book?
read the problem again
oh wait yes
so then what do i write at the end to finish it?