How Should We Express the Amount of Money Sandy Received?

[DawnC]

Problem that I am not sure that I am doing right

One hundred dollars was divided between Ann and Sandy. If Ann received X dollars, write expression for the amount that Sandy would relieved.

Would it be 200 - X or 200/X?

 

[MarkFL]

Given that $X$ represents the amount Ann is to receive, let's let $Y$ be the amount Sandy will receive. Since the total amount (in dollars) to be divided between the two is 100, we then know the sum of the two amounts is 100:

\(\displaystyle X+Y=100\)

Now, solve for $Y$. :D

 

[DawnC]

Thank you

 

[phymat]

Problem that I am not sure that I am doing right

One hundred dollars was divided between Ann and Sandy. If Ann received X dollars, write expression for the amount that Sandy would relieved.

Would it be 200 - X or 200/X?

Both the options given by you are wrong.
Out of 100, if Ann received $x$ dollars, Sandy received the remaining dollars (obviously). Removing $x$ dollars from 100 will give the remaining dollars.
An expression for the dollars that Sandy received will be $100-x$ .
I have posted this solution because I don't agree with Mark for one small reason. The question says "give an expression for amount left with Sandy". But, Mark has given an equation.

 

[MarkFL]

...I have posted this solution because I don't agree with Mark for one small reason. The question says "give an expression for amount left with Sandy". But, Mark has given an equation.

I was helping the OP solve the problem, not simply do it for them. :D