Question

At the beginning of the day the stock market goes up 50 1/2

points and stays at this level for most of the day. At the end of the day the stock market goes down 90 1/4
points from the at the beginning of the day. What is the total change in the stock market from the beginning of the day to the end of the​ day?

Answer 1

78.7%

Explanation:

To calculate the change of a stock price

Given that the

old price= 50 1/2

new price= 90 1/4

We simply or basically subtract the new price from the old price and divivde the result by the old price

mathematically we have

change= (new price - old price)/old price

let us convert from mixed fraction to proper fraction

old price= 50 1/2= 101/2

new price= 90 1/4= 361/4

change= (361/4- 101/2)/101/2

change= (361-202/4)/101/2

change=159/4/101/2

change= (159/4)*(2/101)

change= 159/202

change= 0.787

change in percent = 78.7%