Question

At the beginning of the day the stock market goes up 30 1/2 points.At the end of the day the stock market goes down 120 1/4 points.What is the total change in the stock market from the beginning of the day to the end of the day

Answer 1

Answer 89 3/4

I dont know what to do help me

Answer 2

The total change in the stock market from the beginning of the day to the end of the day is
`-89(3)/(4)` or the stock market goes down
`89(3)/(4)`

Explanation:

At the beginning of the day the stock market goes up
`30(1)/(2)` points. This means, we have to add
`30(1)/(2)`

At the end of the day the stock market goes down
`120(1)/(4)` points. This means, we have to subtract
`120(1)/(4)`

Change
`=+30(1)/(2)-120(1)/(4)=(30-120)+\left((1)/(2)-(1)/(4)\right)=-90+(1)/(4)=-89(3)/(4)`

So, the total change in the stock market from the beginning of the day to the end of the day is
`-89(3)/(4)` or the stock market goes down
`89(3)/(4)`