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

- algebra - of 320 consumers polled, some purchase Blu-ray movies, some purchase ...
- math - Of 320 consumers polled, some purchase Blu-ray movies, some only purchase...
- business - 1.jack leblanc, an mba student at the niversity of wisconsin at ...
- Math - Of 410 consumers polled, some purchases music on CDs, some only download ...
- Math - Of 410 consumers polled, some purchases music on CDs, some only download ...
- Algebra 2 - an ice cream store has 31 flavors of ice cream and 10 toppings. A ...
- Algebra 2 - An ice-cream parlor sells sundaes with 3 different types of ice-...
- Algebra! - An ice cream parlor sells sundaes with 3 different type of ice cream ...
- Geometry - I'm not asking for the answer (I hate when people do that) I'd just ...
- macroeconomic - if the price of the frozen yogurt increase the demand for the ...

More Related Questions