Stock Prices of Company

Question

The table below shows the changes in the stock prices of two companies over a certain period of time. The data for Company C is not shown in the table

 

Change in stock price (per share in dollars)

 

Company A: -12.50

Company B: 17.50

Company C: ?

 

Part A: By how many more dollars did the stock price change per share for Company B than for Company A during this period? 

 

Part B: How would you represent the change in the price per share of Company A and Company B on a number line? Using a number line. Draw an arc with an arrow from one company to the other, and place your answer representing the change on the arc

 

Part C: If you owned stock in Companies A and C, how much would a share of stock in Company C have to change so that you would not lose any money?

Answer 1

Part A: It is only asking about how much the companies changed, so it does not matter that Company A's change is negative and Company B's change is positive. Compare Company A's number to zero and compare Company B's number to zero. Find that difference (subtraction) between them.

17.50-12.50= 5

Company B's price changed $5 more per share than Company A's.

 

Part B: I have never had to draw an arc on a number line. I would need to see the book to help with that. I can't even find that concept online. Sorry.

 

Part C: In order to not lose any money, you would need to earn 0 or more. Because Company A has a negative number, we need to figure out what number we could earn with Company C in order to even out at 0.

-12.50+ ? =0

Company C would need to change $12.50 in the positive direction.