Question

Perform the required calculations for each of the following items. Round your answers to the nearest 0.1%.

Perform the required calculations for each of the following items. Round your answers to the nearest 0.1%.

25. A class had 30 pupils at the beginning of this school term, but now has 5 more pupils. What is the percent of increase?

26. Eggs were $2.05 per dozen on January 1 and $2.00 per dozen on February 1. What percent did the price decrease during January?

27. During November the price of each share of a certain stock declined from $196 to $132. What was the rate of decline for that month?

28. By careful reorganization, a company was able to reduce the cost of operation from $21,840 per month to $17,190 per month. By what percent was the cost of operation reduced?

29. The circulation of a city library for September was 157,928 books; for October, 184,211 books. What was the percent of gain for October over September?

Answer 1

1.

7.62 + 8.95 = 16.57

2.

3,968 x 0.1035 = 410.688

3.

475.91 - 238.12 = 237.79

4.

16.80 / 4.96 = 3.39

5.

82.49 x 133.9 = 11,045.411

6.

26.70 + 41.56 = 68.26

7.

0.7864 / 4.80 = 0.16383

8.

proper

9.

improper

10.

17/35

11.

59/60

12.

7/12

13.

4/17

14.

3/10

15.

14/3

16.

11/7

17.

5/2

18.

21/20

19.

675,000

20.

356,000

21.

26.4

22.

47.5

23.

$ 62.76 to the nearest cent

$63.00 to the nearest dollar

24.

$ 38.42 to the nearest cent

$38.00 to the nearest dollar

25.

16.7%

26.

2.4%

27.

32.7%

28.

21.3%

29.

16.6%

30.

40%=600 25%=375 10%=150

31.

25%=160 10%=64 5%=32

Explanation:

Answer 2

25. 16.7%

26. 2.4%

27.32.7%

28. 21.3%

29. 16.6%

Explanation:

25.

Initial number of students= 30

Additional students=5

Current number of students= 30+5=35

percent increase= increase/initial number *100

% increase= 5/30 *100 =50/3 =16.7%

26.

Initial January price was $2.05 per dozen

In February the price changed to $2.00 per dozen

Decrease in price= $2.05-$2.00 = $0.05

% decrease in price= 0.05/2.05 *100 =2.4%

27.

Original price of share= $196

New price of share=$132

Decrease in value of share= $64

%decrease = 64/196 *100 =32.7%

28.

Original cost of operation per month was=$21840

New cost of operation per month is =$17190

Decrease in cost of operation is = $21840 - $17190 =$4650

% decrease in cost of operation= 4650/21840 *100 =21.3%

29.

Circulation in September was =157,928

Circulation in October is= 184,211

Increase in circulation is = 184211-157928=26283

% increase in circulation = 26283/157928*100=16.6%