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May 22, 2015

Posted by **Delilah** on Wednesday, November 28, 2012 at 6:34pm.

Use an equation to solve the problem.

1.

What is 57% of 11? (1 point)

11 = 0.57 • n; 19.3

n = 57 • 11; 627

n = 0.57 • 11; 6.27

11 = 57 • n; 0.19

2.

224 is 25% of what number? (1 point)

224 • 0.25 = w; 560

224 = 0.25 • w; 896

224 • 0.25 = w; 56

224 = 0.25 • w; 90

3.

Explain how to find 45% of a number.

(1 point)

Multiply the number by 0.45.

Divide the number by 4.5.

Divide the number by 45.

Multiply the number by 4.5.

Find the percent of increase. Round to the nearest tenth of a percent where necessary.

4.

32 to 76 (1 point)

137.5%

42.1%

57.9%

2.4%

Find the percent of decrease. Round your answer to the nearest tenth of a percent where necessary.

5.

57 to 19 (1 point)

38%

66.7%

200%

20%

Find the percent of markup. Round to the nearest whole percent.

6.

Store's Cost: $136.50

Selling Price: $184.70 (1 point)

48%

26%

14%

35%

Find the sale price. Round to the nearest cent.

7.

Regular Price: $57.63

Percent of Discount: 10% (1 point)

$63.39

$5.76

$51.87

$57.53

Find the regular price. Round to the nearest cent.

8.

Sale Price: $56.78

Percent Discount : 40% (1 point)

$141.95

$96.78

$79.49

$94.63

9.

Find the interest earned in an account with $600 invested at 4.5% annual simple interest for 2 years. (1 point)

$540.00

$5,400.00

$54.00

$13.50

10.

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.

(1 point)

$82,361.49

$9,151.28

$20.22

$91,512.77

My answers:

1. n = 0.57 • 11; 6.27

2. 224 = 0.25 • w; 896

3. Multiply the number by 0.45.

4. 137.5%

5. 66.7%

6. 48%

7. $51.87

8. $94.63

9. $54.00

10. $9,151.28

- 7th grade math Ms. Sue please -
**Ms. Sue**, Wednesday, November 28, 2012 at 6:53pmI disagree with 6.

The others are correct.

- 7th grade math Ms. Sue please -
**Destiny**, Wednesday, November 28, 2012 at 7:52pmare all others but 6 correct?

- 7th grade math Ms. Sue please -
**Lila**, Thursday, January 10, 2013 at 1:59pmyes????

- 7th grade math Ms. Sue please -
**Isabella**, Thursday, December 5, 2013 at 6:45pmWhat is 45% of 10?

A)450

B)45

C)4.5

D)0.45

I think its D) 0.45

- 7th grade math Ms. Sue please -
**Anonymous**, Monday, November 10, 2014 at 2:45pmNumber 6 is not 48%, it is D: 35%

- 7th grade math Ms. Sue please -
**Took the test**, Thursday, December 11, 2014 at 4:29pmI came here to check my answers and i had 3 wrong! 10/10 thanks to all of you! Anonymous was right its 35% thank you all! <3