WHAT PERCENT?
THE METHOD OF PROPORTIONS

PROBLEMS

To see the answer, pass your mouse over the colored area.
To cover the answer again, click "Refresh" ("Reload").
Do the problem yourself first!

11.  28 out of 100 students got A.

11.  a)  What percent got A?  28%

11.  b)  What percent did not get A?  72%

12.  81 students in the class were brunettes, 14 were blondes, and 5 were
12.  red-heads.  

12.  a)  What percent were brunettes?  81%

12.  b)  What percent were blondes?  14%

12.  c)  What percent were red-heads?  5%

13.  a)  32 out of 100 people responded Yes.  What percent responded
13.  a)  Yes?  32%

13.  b)  32 out of 200 people responded Yes.  What percent responded
13.  b)  Yes?  16%

13.  c)  32 out of 50 people responded Yes.  What percent responded
13.  c)  Yes?  64%

The Method of Proportions: Fourth term 100

4.  a)  Why is this a proportion (or, why are these fractions equivalent)?

11 44

=

25  100

11 is the fourth part of 44, just as 25 is the fourth part of 100.

14.  a)  11 is what percent of 44?  25%

14.  b)  Why is this a proportion?

9  50

=

18  100

100 is two times 50, and 18 is two times 9.

14.  a)  9 is what percent of 50?  18%

14.  c)  Why is this a proportion?

8   200

=

4   100

100 is half of 200, and 4 is half of 8.

14.  c)  8 is what percent of 200?  4%

15.  Write each of the following as a percent.

15.   a)

72  100

= 72%

b)

3   100

= 3%

c)

8  50

= 16%

d)

31 50

= 62%

15.   e)

9  25

= 36%

f)

11 20

= 55%

g)

6  25

= 24%

h)

3 5

= 60%

15.   i)

3  20

= 15%

j)

9  10

= 90%

k)

8   200

= 4%

l)

15  200

= 7½%

15.   m)

27  300

= 9%

n)

28  500

= 5.6%

o)

489  1000

= 48.9%

p)

6    1000

= .6%

16.  Out of a class of 25 students, 4 were absent.  What percent were
16.  absent?  16%

16.  What percent were present?  84%

17.  Jennifer had $50 and she spent $49.  What percent of her money did
17.  she spend?  98%

17.  What percent does she have left?  2%

18.  A team played 20 games and won 17 of them.  What percent did
18.  they win?  85%

18.  What percent did they lose?  15%

19.  In a survey of 200 people, 84 responded Yes.  What percent
19.  responded Yes?  42%

10.  In a survey of 200 people, 85 responded Yes.  What percent
10.  responded Yes?  42½%

11.  128 out of 400 students took French.  What percent took
11.  French?  32%

12.  129 out of 400 students took French.  What percent took
12.  French?  32¼%

13.  500 people recently voted, and 325 voted No.  What percent voted
13.  No?  65%.  What percent voted Yes?  35%

14.  500 people recently voted, and 328 voted No.  What percent voted
13.  No?  65.6%.  What percent voted Yes?  34.4%

15.  In a survey of 1000 students, 682 said that they did.  What percent
15.  said that they did?  68.2%.  What percent said they didn't?  31.8%

16.  In a later survey of 1000 students, 846 said that they did.  What
16.  percent said that they did?  84.6%
16.  What percent said they didn't?  15.4%

Continue on to the next section.

or

Return to the previous section.

Table of Contents

---

Please make a donation to keep TheMathPage online.
We do not accept advertising. Even $1 will help.

---

Copyright © 2001-2007 Lawrence Spector

Questions or comments?

E-mail:  themathpage@nyc.rr.com