Okay my brother is going to be starting DeVry University in Spring. He has to take the placement exam so they gave him a study guide. Now fractions are not my strongest areas but I have asked a few people and no one can get. I know this must be really simple and I am just overlooking something I mean it is just basic arithmetic. I don't feel I am breaking any rules by posting this question since the answers are given anyway.
Sam and Mary each owned one-half stock in a printing company. Same sold 2/3 of his stock to Mary. What fractional part of the printing business does Mary now own?
then the answers are
A) 7/10
B) 9/10
C 3/7
D 6/7
The test says that the correct answer is A) 7/10 and we can not figure out how they got it. I aced all of my math classes for college and I had 5 of them, but I'm at a loss. Now I did google this exam and found the same exact question with the same answers only it said that same owned 2/5. So we know that the answer is supposed to be 7/10 either way, but how do you get it? Please help it is not like a grade depends on it or anything, it is just one of those things that is now bothering the heck out of us.
Sam and Mary each owned one-half stock in a printing company. Same sold 2/3 of his stock to Mary. What fractional part of the printing business does Mary now own?
then the answers are
A) 7/10
B) 9/10
C 3/7
D 6/7
The test says that the correct answer is A) 7/10 and we can not figure out how they got it. I aced all of my math classes for college and I had 5 of them, but I'm at a loss. Now I did google this exam and found the same exact question with the same answers only it said that same owned 2/5. So we know that the answer is supposed to be 7/10 either way, but how do you get it? Please help it is not like a grade depends on it or anything, it is just one of those things that is now bothering the heck out of us.
