Homework Help: Math

Posted by Sam on Tuesday, November 28, 2006 at 10:17am.

Amy has a collection of X,Y, and Z's. Every X is a Y. One-half the Z's are Y's. There are 3 times as many Y's as X's. Amy has 50 Z's and 40X's.
No Z in an X.
How many Y's does Amy have that are neither X's nor Z's?

I found drawing a venn diagram helps solve this problem. There are 120 Ys, 40 XYs, and 25YZs. So, Ys only = 120-40-25 = 55

No one has answered this question yet.

Answer this Question

Related Questions

math - I'm in 5th grade pls. help. Amanda has a collection of X, Y and Z. ...
math - I'm in 5th grade pls. help. Amanda has a collection of X, Y and Z. ...
Math - While spending 10 weeks at a university in Germany, Ayesha frequently had...
math - joe wants his sticker collections. he wants to increase his collection by...
MATH - If I had one clock that chimes every half hour and the other every 15-...
Math - I cant figure out this problem. A pool is rectangular in shape, with a ...
math- - how do you find the area of a triangle? 1/2 x B x H (one half times the ...
Business - Assume that garbage collection is now free. Suppose a local goverment...
Physics - I was sitting in a park on a bench next to another person and I moved...
Nuclear Physics - An investigator receives Co-60 (5.27 year half life) for use ...

For Further Reading

First Name:
School Subject:
Answer: