Percent Change
Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.
From 62 to 45
27% decrease
Joshua uses his thermometer and finds the boiling point of ethyl alcohol to be 75o C. He looks in a reference book and finds that the actual boiling point of ethyl alcohol is 80oC. What is his percent error?
6%
I=1200
P= 12000
T= 2 Years
R=?
5%
Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.
From 6 inches to 7 inches
17% Increase
Matthew deposited $900 into a certificate of deposit with a rate of 15% for 2 years. How much money did he have in the account after 2 years?
$270 + $900 = $1170
A student estimated a mass to be 250 kg. After careful measurement, the mass weighed 240 kg. What is the Percent error
4%
I= 22000
P=?
R= 6%
T= 2 years
$183,333.33
Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.
The price of a pair of shoes increases from $20 to $32.
60% Increase
Gina deposits 150 dollars at the start of each year into college savings account that pays 4% simple interest at the end of each year. She does not deposit the interest she earns each year. How much total interest will Gina earn on her deposits through the end of the eighth year?
Shane has been training for a 5-mile race. Before the race, he predicts he will finish in 42 minutes. He actually finishes the race in 40 minutes. What is the percent error for his prediction?
5%
P= 18500
R= 0.5%
T= 8 months
I=?
$61.67
Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.
A shirt was originally priced at $48. It went on sale for $38.40. What was the percent that the shirt was discounted?
15%
You are starting your own small business in Atlanta. You borrow $10,000 from the bank at a 8% rate for 5 years. Find the interest you will pay on this loan.
$4000
When Sue agreed to proofread her sister's essay, she expected that it would be 6 pages long. When he gave her the essay, it was actually 4 pages long. What is the percent error for her estimate?
50%
P= 20000
I= 2500
R= 3%
T=?
4.2 years
Find the Percent Change. State whether its and increase or decrease. Round to the nearest Percent.
John moved from a house that is 89 miles away from his workplace to a house that is 51 miles away from his workplace. What is the percent change in the distance from his home to his workplace ?
43% Decrease
Drew loaned Marissa $20,000 to buy a car at a simple interest rate of 2.1% for 4 years. How much does Marissa owe Drew?
1,680
A new roller coaster just opened at Friday Fun Park. When Lisa got in line, a sign said the wait from that point would be 45 minutes. The actual wait was only 35 minutes. What is the percent error for the park sign's estimate?
29%
I= 3000
R= 4.5%
T=2 months
P=
$400,000