Percent to Decimal/Decimal to Percent
Convert 120% to a decimal.
1.2
Use the percent proportion to solve:Olivia has read 143 pages of a 220- page novel. What percent of the pages in the novel has she read?
65%
A fruit drink that was sold in 16-ounce containers is now sold in 20-ounce containers. What is the percent of change in quantity? State whether this is an increase or a decrease.
25% increase
A bike store sells scooters at a 54% markup. If the store bought each scooter for $29.25, what is the resale price to the nearest dollar?
$45.00
If you invest $1200 in an account that pays 13.2% simple interest, what is the balance of the account after 4 years?
$633.60
Convert 4.9% to a decimal.
.049
The local bakery sells 150 donuts a day. If 70% if these donuts are sold in the morning, how many donuts are sold in the morning?
105 donuts
On Tuesday, Nash made 231 free throws on Wednesday he made 258 free throws. What is the percent change in his free throws? Round to the nearest percent. State whether this is increase or decrease.
12% increase.
If a sweater costs $37.99, and the sales tax is 6%, what is the total price of the sweater?
$40.27.
Find the interest earned if you place $76.43 into an account that pays 21.5% simple interest, and leave it in for 3 months.
$4.11
Convert .008 to a percent
0.8%
Jack can long- jump 195% of his height with a running start. If Jack is 50 inches tall, how far can he long- jump?
97.5 inches
Al's Quick Mart sells milk for $1.99 per gallon, but they used to sell it for $2.79. What is the percent change in the price? Round to the nearest whole percent. State whether this is increase or decrease.
40% decrease.
A certain container of mouthwash usually costs $2.99 at a store. If it is on sale for 20% off, how much does the mouthwash cost now?
$3.59
If you buy a necklace for $400 on your credit card, which charges 21.3% simple interest, how much interest will be added after 15 months?
$106.50
Convert 3.1 to a percent
310%
Lily took a survey of 80 students in the 7th grade and 150 students in8th grade. She found that 80% of the 7th graders like country music, while only 60% of the 8th graders like it. How many students in each grade like country music?
7th grade- 64 students; 8th grade- 90 students
A custom estimates a computer at an electronics store is $1099. Determine the percent of error in price if the actual price is $1349. Round to the nearest whole percent.
19%.
Elvia can get a $10.28 discount on a $68.53 purchase at a certain department store because she works there. What percent discount does she get?
15% discount.
Mason took out an $800 loan from the bank. At the end of 5 years, he pays back the principal, plus $120 interest. What was the interest rate?
3%
Convert 0.07% to a decimal
.0007
Madelyn hikes 190.5 meters up a mountain. If she is 62% of the way up, how tall is the mountain? Round to the nearest whole meter.
307 meters
A student estimates the mass of an object to be 325g. The actual mass is 342g. What is the percent error of the students calculation?
5%.
If a stereo is sold for $59.99, and Karen pays $64.19 for it when she checks out, what is the sales tax in the area?
7% tax.
Connor took out a 4 year loan to buy a car at a 4% simple interest rate. If he has to pay $240 in interest, how much principal did he borrow?
$1,500