# Math

David would like to buy a laptop computer and save 20 percent during sale. He uses his credit card to pay for it. David is counting on getting a lot of money in graduation presents from his parents' business associates. David knows that his credit card company offers a 28 day grace period, so if he pays off the whole amount, he won't owe any interest. Sure enough, after his big party, David counts up the checks and has 1000! When he gets his credit card bill at the end of the month, he is able to pay the balance of 800 in full

How long will it take for David to pay off the 800?

How much interest will he have to pay ?

1. 0
2. 11
1. What am I missing here? Your problem states that he pays off the 800 in full at the end of the month. No payments, no interest.

1. 0
posted by Ms. Sue
2. Thank you

1. 0
posted by Marquita

## Similar Questions

1. ### Math

Elizabeth wants to buy a new laptop computer, but she just started her baby sitting job and she hasn't earned any money yet. She figures once she starts earning income she save \$90 a month in a saving account that earns three
2. ### math

I need help with my homework. 1) You want to buy a jacket that costs \$45, it is on sale for 30% off. How much money will you save? Show your work. 1) You grab lunch with a friend and the bill is \$27.00. You want to leave a 15%
3. ### English

Why do you save money? 1. I save money to buy a fancy bike. 2. I save money to buy the MS Office program. 3. I save money to buy a Samsung galaxy 5. 4. I save money to please my parents, for they like me to save money. 5. I save
4. ### algebra

Susie purchased a laptop computer for \$2000 at the beginning of the year in 2008,the value of the computer decreased by 20% each year. Susie wants to purchase a new laptop computer when the value of hers falls below \$500. When
5. ### Intro. to Comp. -- Question

If you need a computer to carry with you to manage your daily schedule of meetings, which type of computer would be ideal in this instance? PDA, laptop, or personal computer wouldn't a PDA be best? PDA is best, yes. Laptop would
6. ### arithmetic

Ana sees a computer that costs \$1600. The store manager says next week will be on sale \$350 less. What percent will Ana save
7. ### English

Can you help me check this paragraph? 1) An afternoon we were at my friend Paul’s house to do our homework. We usually do homework together, and we were surfing the net because we had to find information for a school research.
8. ### algebra

A laptop computer is purchased for \$5000 . Each year, its value is 70% of its value the year before. After how many years will the laptop computer be worth \$300 or less
9. ### Help with English

Pleae check for any comma errors or capialization.If I need to add or delete any commas, please let me know where. Thank you!! You are invited to our private inventory sale, beginning on Wednesday, June 1 through Saturday, June
10. ### Maths

In a sale of electrical equipment, the price of all goods is reduced by . Work out the sale price of the following. a A DVD player which normally costs £88 b A portable audio player which normally costs £150 c A laptop computer

More Similar Questions