Math-Ratio?

Question

http://img.photobucket.com/albums/v732/car_slut2/00701700Q17.jpg

18. How many people preferred WCLM?
A. 24.
B. 88.
C. 96.
D. 100.
C--Is not correct.

19. How many more people preferred WWCN than WANR?
A. 68.
B. 76.
C. 164.
D. 236.
C--Is not correct

19. A master plan is devised for?
A. Emergencies.
B. Investments.
C. Short-Term Goals.
D. Long-Range Goals.
C--Is not correct.

20. A______ is invested by managers in a diversity of stocks, bonds, and other securities?
A. Series EE Bond.
B. Promissory Note.
C. Preferred Stock.
D. Mutual Fund.
C--Is not correct.

Helping a friend.
Not my homework question. It's just number's make me keep track of things a better.

Thank you.

Answer 1

Based on what you gave me, the answers are as follow.
18. c 19.b 20. a 21. d
The difference between 41% and 22% is 19%, and the only number that factors out 19 is 76, which is four times 19, so the number of people is 400. I had to do 19 first to figure out the answer for 18, since the pie chart doesn't give enough information. It doesn't tell me how many people there are.
18) .24*400=96, so the answer is a)
19) I explained that already
20) a) Emergencies
21) a) Mutual Fund

Your friend wasn't given enough information to begin with, so it's no wonder your friend was having problems with the homework questions.