Changing of the Cents / Ercent Perror
What is the Percent of Change formula?
New Minus Old, Divided by Old, times 100
$23 price
4% tax
How much is the tax?
$0.92
$40 shirt
30% off
How much is the discount?
$12
What is the interest formula?
I=PRT
Whenever using a percent, what do you have to do before you use it?
Turn it into a decimal
divide by 100
I had 30 bananas
now I have 19 bananas
what is the percent of decrease?
37%
55.80 subtotal
18% tip
what is the total price?
65.84
$5000 sale
5% commission
How much do you earn?
250
Principal: $450
Interest Rate: 4%
Time: 4 years
How much interest is earned?
$72
What is 32% of 64
20.48
Ruth thought there were 30 kinds of frogs in her county
there are actually 42
What is her percent of error?
29%
$12 in taxes
6.8% tax rate
what was the subtotal? (pre-tax price)
176.47
$6300 Wheel of Fortune (alpha edition)
15% Discount
How much is the card after the discount?
5355
Principal: $3000 Loan
Interest rate: 2%
Time: 21 years
How much in total would be owed?
4260
35.4 is 60% of what?
59
Tyra bought 35 tickets for the fair. She used 7. what was her percent of decrease?
20%
Stephen is a scumbag and doesn't tip his waiter for his steak dinner. His bill was $124.89 and he should of tipped at least 15%. How much should his total have been if he was a good person?
143.62
Michael needs to earn at least $2140 for his rent. He gets 3% commission on everything he sells. How much (in $ value) does he need to sell in a month for his rent?
71,334
Beef forgot he put $600 in the bank 10 years ago. His bank gave him a 3% monthly interest rate. How much total money does he have in that bank account now?
$2760
34 is what percent of 40?
85%
Malcolm predicted there were going to 50 students absent today. There were actually 13 more than that that were absent. What was their percent of error?
21%
Coshua Jannon went to dinner tipped his waitress generously. His subtotal before tax was $57.49. There is a 5% tax on dining in his state, and he tipped $20. What percent of his bill did Mr. Jannon tip?
33%
Hali was selling signed merch from the local NBA team. He gets 6% commission on everything he sells. Today, the store announced a 30% off deal for all customers. If he sold $4200 worth of product today, how much would he have earned if there WASN'T a discount?
$360
Carah Sannon took got a loan for her new car. She needed a $14,500 loan. She could choose between 4% interest rate over 15 years, or 9% over 8 years. Assuming she took the better deal, how much interest will she owe?
8700
21