anonymous
  • anonymous
help! :)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@Vocaloid
anonymous
  • anonymous
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.
Vocaloid
  • Vocaloid
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

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More answers

anonymous
  • anonymous
is that the answer?
Vocaloid
  • Vocaloid
that's not the full answer, I told you to calculate the cost of the book
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
how do i calculate the cost of the book?
Vocaloid
  • Vocaloid
the original price of the book is 28.50, now calculate 65% of 28.50
anonymous
  • anonymous
19.38
Vocaloid
  • Vocaloid
check your math again
anonymous
  • anonymous
do i add, subtract, or divide?
Vocaloid
  • Vocaloid
65% of 28.50 = .65*28.50 = ?
anonymous
  • anonymous
18.525
Vocaloid
  • Vocaloid
good, now calculate 110% of 18.525
anonymous
  • anonymous
2.03775
Vocaloid
  • Vocaloid
nope, not quite 1.10*18.525 = ?
anonymous
  • anonymous
20.3775
Vocaloid
  • Vocaloid
good, now read the question again and tell me the answer
anonymous
  • anonymous
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 :)
Vocaloid
  • Vocaloid
well, can Alex and Lara buy the book?
anonymous
  • anonymous
nope
Vocaloid
  • Vocaloid
read the problem again
anonymous
  • anonymous
oh wait yes
Vocaloid
  • Vocaloid
good
anonymous
  • anonymous
so then what do i write at the end to finish it?

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