Use an equation to solve the problem.
What is 57% of 11?
A. 11 = 0.57 • n; 19.3
B. n = 57 • 11; 627
C. n = 0.57 • 11; 6.27
D. 11 = 57 • n; 0.19
224 is 25% of what number?
A. 224 • 0.25 = w; 560
B. 224 = 0.25 • w; 896
C. 224 • 0.25 = w; 56
D. 224 = 0.25 • w; 90
Explain how to find 45% of a number.
A. Multiply the number by 0.45.
B. Divide the number by 4.5.
C. Divide the number by 45.
D. Multiply the number by 4.5.
Find the percent of increase. Round to the nearest tenth of a percent where necessary.
32 to 76
A. 137.5%
B. 42.1%
C. 57.9%
D. 2.4%
57 to 19
A. 38%
B. 66.7%
C. 200%
D. 20%
Find the percent of markup. Round to the nearest whole percent.
Store's Cost: $136.50
Selling Price: $184.70
A. 48%
B. 26%
C. 14%
D. 35%
Find the sale price. Round to the nearest cent.
Regular Price: $57.63
Percent of Discount: 10%
A. $63.39
B. $5.76
C. $51.87
D. $57.53
Find the regular price. Round to the nearest cent.
Sale Price: $56.78
Percent Discount : 40%
A. $141.95
B. $96.78
C. $79.49
D. $94.63
Find the interest earned in an account with $600 invested at 4.5% annual simple interest for 2 years.
A. $540.00
B. $5,400.00
C. $54.00
D. $13.50
When invested at an annual interest rate of 4.7%, an account earned $1,290.33 of simple interest in 3 years. How much money was originally invested? If necessary, round to the nearest cent.
A. $82,361.49
B. $9,151.28
C. $20.22
D. $91,512.77
To solve these problems, you need to use the equation:
Part = Percent x Whole
where "Part" represents the value you are trying to find, "Percent" represents the percentage given in the problem, and "Whole" represents the total value or number.
For example, let's solve the first problem:
What is 57% of 11?
Using the equation: Part = Percent x Whole
Let Part = n (the value we are trying to find)
Percent = 57% (or 0.57 as a decimal)
Whole = 11
The equation becomes: n = 0.57 x 11
Now, you can solve for n:
n = 6.27
Therefore, the answer is C. n = 0.57 x 11; 6.27
Now, try to solve the rest of the problems using the same approach and the equation provided.