Answer:
In the three days the Amazon stock share rose by
Step-by-step explanation:
Given:
Amazon stock share
rose 4 and 1/2 points on Wednesday
rose 3 and 3/8 points on Thursday
fell 2 and 1/4 points on Friday
To find the overall change.
Solution:
<em>The change in share on Wednesday is given as =
</em>
<em>The change in share on Thursday is given as =
</em>
<em>The change in share on Friday is given as =
</em>
Thus, the over all change is given by:

<em>In order to combine mixed numbers, we will work the whole numbers and the fractions separately.</em>
⇒ 
⇒ 
To combine fractions, we will take least common denominator.
<em>The L.C.D. 2,4 and 8 = 8 as it is the least common multiple for all the denominators</em>
So, we multiply the numerators with the corresponding numbers to make the denominators common.
⇒ 
⇒ 
Combining the numerators.
⇒ 
⇒ 
⇒ 
The overall change for the three days can be given as : 
This means the share rose by 