Solving % Proportions
What is 81% of 540?
437.4
To find percent change, find the original percentage and ____________ it from 100.
subtract
A sleeping bag that cost $85 is marked up 22%. What is the sales price?
$103.70
Your family eats at Valencias for $44.70. The sales tax rate is 4.2%. How much will the tax be?
$1.88
A loan of $6400 at 12.5% simple interest is to be repaid in 4.5 years. What is the total amount to be repaid?
$10,000
64 is what percent of 80?
80%
A toy that had sold for $16.50 was on sale for $11.55. What was the percent of discount?
100-70 = 30%
A bracelet that was $44 has a discount of 8%. What is the sales price?
$40.48
Your waitress does an excellent job at Olive Garden. You want to tip her 22%. How much will you tip her if your bill was $28.92?
$6.36
Your granny took out a $6, 500 automobile loan with a rate of 7%. After 3.5 years, how much interest will she have to pay?
$1, 592.5
Of the traffic violations cited by Officer Huang, 64% were for speeding. If Officer Huang cited 48 motorists for speeding, how many violations were there altogether?
75 violations
A bicycle that usually sells for $120 is on sale for $96. What is the percent of discount?
100 - 80 = 20%
A bicycle that usually sells for $120 is 20% off. What is the cost of the bike now?
$96
Gramps golfs every weekend at Top Golf. He always tips 15%. His bill was $64.40. How much did he tip?
$9.66
Jill has $525 in a savings account that pays 4% simple interest. How much interest will she make in her account after 3 years?
$63.00
Last Friday, 720 people at Data Tech drove cars to work. 585 bought gas on the way home. What percent of the drivers bought gas on the way home?
81.25%
10.76%
A wheelbarrow sells for $36. Next month the price will be marked up 6%. How much will the wheelbarrow cost next month?
$38.16
Your sister gets her nails done once a month. This month, it cost $72.00 to do her nails. She tips $12%.
How much money did she pay in total to do her nails?
$80.64
Phil invested $1,300 for one year at a rate of 6.5%. How much interest did he gain?
$84.50
Your grandma makes 14% commission based on the insurance sales she makes. Last week, her insurance sales were $2,100. How much commission did she make?
$294
The original price of a couch was $3,200. It is now $3600. What is the percent increase of the couch?
12.5% increase.
A car usually costs $36,000. The dealership marks up vehicles to 12% of the original cost. What is the sales price of the car?
$40,320
You and your friends ate at Sonic together. The total bill was $34.80. You all decide to tip 8%. The sales tax is also 4.2%.
How much was the bill in total?
$42.46
Victor had a two-year loan with a simple interest rate of 13% annually. At the end of the two years he had paid $1454.44 in interest. What was the principal amount of Victor's loan?
Interest = p x r x t
1454.44 = p x (13/100%) x 2
p = $5,594