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dej33
dej33
28.01.2020 • 
Mathematics

Can someone check these

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. 35%
7. $51.87
8. $94.63
9. $54.00
10. $9,151.28

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