Homework Help: algebra

Posted by Anna64 on Tuesday, October 23, 2012 at 7:36pm.

Of 480 consumers polled, some purchase ice cream, some purchase frozen yogurt, and some purchase both. If 260 people polled purchase ice cream and 200 purchase both ice cream and frozen yogurt, how many people purchase frozen yogurt?

algebra - Reiny, Tuesday, October 23, 2012 at 8:55pm
Assuming that of the 480, everybody had either ice cream or yogurt

number for ice cream --- A
number for yogurt ---- B

N( A or B) = N(A) + N(B) - N(A and B)
480 = 260 + N(B) - 200
N(B) = 420

confirm the answer is corrrect by making a Venn diagram.
algebra - Steve, Tuesday, October 23, 2012 at 8:56pm
n+260-200 = 480
n = 420

420 bought just yogurt

Answer this Question

Related Questions

Math - A mall has three department stores, J C Penney, Macy’s, and Sears. A...
Math - To determine what effect the salespeople had on purchases, a department ...
economics - Give an example of a fairly major purchase decision you've made ...
math - 256 consumers polled, some like only thriller movies, some prefer just ...
8th grade math - According to one survey, the number of consumers who planned to...
statistics - A travel agency offers 4 different vacation packages to Europe. ...
math - what is the dollar value of ending inventory if there were 17,000 units ...
AC 323CT - . Harold Stevenson purchased substantially all of the business assets...
Business - Marketing professionals must understand the consumer experiences in ...
history - How did the Louisiana Purchase affect the size of the U.S? Look at a ...

For Further Reading

First Name:
School Subject:
Answer: