stock market at the beginning of the day the stock market goes up 50\\frac{1}{2} points and stays at this…

stock market at the beginning of the day the stock market goes up 50\\frac{1}{2} points and stays at this - level for most of the day. at the end of the day the stock market goes down 120\\frac{1}{4} points from the high 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? the total change in the stock market is points (type an integer, proper fraction, or mixed number ) enter your answer in the answer box and then click check answer. all parts showing question 4 of 10

stock market at the beginning of the day the stock market goes up 50\\frac{1}{2} points and stays at this - level for most of the day. at the end of the day the stock market goes down 120\\frac{1}{4} points from the high 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? the total change in the stock market is points (type an integer, proper fraction, or mixed number ) enter your answer in the answer box and then click check answer. all parts showing question 4 of 10

Answer

Explanation:

Step1: Convert mixed - numbers to improper fractions

$50\frac{1}{2}=\frac{50\times2 + 1}{2}=\frac{101}{2}$ and $120\frac{1}{4}=\frac{120\times4+1}{4}=\frac{481}{4}$

Step2: Calculate the change

The change is the initial increase minus the final decrease. We need to subtract the decrease from the increase. First, make the common denominator for the two fractions. The common denominator of 2 and 4 is 4. So $\frac{101}{2}=\frac{101\times2}{2\times2}=\frac{202}{4}$. Then the change is $\frac{202}{4}-\frac{481}{4}=\frac{202 - 481}{4}=\frac{-279}{4}=- 69\frac{3}{4}$

Answer:

$-69\frac{3}{4}$