Simple Interest
A savings account begins with $900 and earns 5% simple interest over the course of 10 years. Find the interest earned.
$450
Macy's purchases a pair of boots for $68 and marks it up 150%. Find the selling price of the boots.
$102
If a store imposes a 120% markup, the new price is _____% of the original price.
220%
Which options represent 5% of 32?
a. 0.05 • 32
b. 0.05 • 0.32
c. 5/100 • 32
d. 0.5 • 32
a and c
An account has earned $75 in simple annual interest over the course of 2 years. The interest rate was 6.5%. Find the principal. Round to the nearest cent.
$576.92
A pair of pants are discounted by 35%. The sale price is $52.50. Find the original price.
$80.77
Four friends go out to eat and their meal costs $82.50. The sales tax is 5% and they should tip the waiter 20%. Tax is not factored in when the tip is calculated.
a. What is the total bill?
b. How much should each friend pay (to the nearest cent)?
82.50 + 4.13 + 16.50
$103.13 in total
$25.78 per person
A swimming pool had 2.5 million liters of water in it. Some water evaporated, and then the pool only had 2 million liters of water in it.
What percent of the water evaporated?
20%
An account earned $15.50 in simple annual interest over the course of 2 years. The principal amount was $700. Calculate the interest rate. Round to the nearest tenth of a percent.
1.1%
Boats 4 Less purchases a boat for $12,000. They then mark up the price by 75%. After a week they decide to offer a 10% discount. Sylvia purchases the boat and must pay a 4.5% sales tax as part of the purchase. How much did Sylvia pay for the boat?
$19,750.50
At the Popham House Assembly 32% of the students are in the 6th grade, 35% are in the 7th grade, and 33% are in the 8th grade. If 8% of the 6th grade wears glasses, 7% of the 7th grade wears glasses, and 5% of the 8th grade wears glasses, what is the overall percent of students who wear glasses?
6th 2.56%
7th 2.45%
8th 1.65%
Total 6.66%
Elvis guessed there were 275 jolly ranchers in Mr. Goss' jar. The actual amount was 305 jolly ranchers. Calculate Elvis' percent error to the nearest whole percent.
10%