Simple Interest
A savings account begins with $900 and earns 5% simple interest over the course of 10 years. Find the interest earned.
$450
You purchase a Pink Drink for $6.89, which included a 7.5% sales tax. What was the price of the drink before the tax was added?
$6.41
An item that costs x dollars is marked down 20%. Later, the item is marked down an additional 20%. What is the overall percent discount for the item?
36%
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 women bought two dresses. A $90 pink dress was on sale for 10% off, while a $40 blue dress was on sale for 5% off. What percent did she save on her purchase of the two dresses?
pink dress = $81
blue dress = $38
saved = $11
11/130 = 8.5%
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%
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
A car was marked up 100% by Cars for Less. After not selling, the company offered a 25% off sale. After a 6% sales tax, the car was purchased for $28,620. What was the wholesale cost (cost price) of the car?
$18,000
Nick is exactly 25 years old on New Year’s Day of 2024, while Doug is exactly d years old on the same day. On New Year’s Day 2017, Doug was 50% older than Nick. What is the value of d?
34
Mike's monthly income is $4000. He spends 34% of his earning on food, 46% on entertainment, $380 on transport, and saves the rest.
a) Calculate Mike's monthly savings.
b) Express his monthly savings as a percentage of his monthly income.
$420 and 10.5%
Bart, Lisa, and Maggie each contributed money to buy a present that cost $115.50 for their friend. Bart and Lisa contributed $58 and $x, respectively, and Maggie paid 25% of the total contribution from Bart and Lisa.
Find x and how much Maggie contributed.
x = $34.40
Maggie = $23.10