The total change in the water level is [tex]-\frac{29}{24}[/tex]
What is a fraction?
'A fraction is a number that represents a part of a whole. It consists of a numerator and a denominator. The numerator represents the number of equal parts of a whole, while the denominator is the total number of parts that make up said whole.'
According to the given problem,
Change in first month = [tex]([/tex][tex]-1\frac{1}{3}[/tex] [tex])[/tex] + [tex]\frac{21}{80}[/tex] + [tex](-\frac{11}{80})[/tex]
= [tex]([/tex][tex]-1\frac{1}{3}[/tex] [tex])[/tex] + [tex]\frac{10}{80}[/tex]
= [tex]([/tex][tex]-1\frac{1}{3}[/tex] [tex])[/tex] + [tex]\frac{1}{8}[/tex]
= [tex]\frac{1}{8} - \frac{4}{3}[/tex]
= [tex]\frac{3 - 32}{24}[/tex]
= [tex]-\frac{29}{24}[/tex]
Hence, we can conclude, the change in the water level is [tex]-\frac{29}{24}[/tex]
Learn more about fractions here: https://brainly.com/question/10354322
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