Step-by-step explanation:
Let us name the deficiency of rainfall last year as [tex]x[/tex] and this year as [tex]y[/tex].
This year is 20% of the last year.
20%=[tex]\frac{20}{100} = \frac{1}{5}[/tex]
[tex]x=\frac{1}{5} y[/tex]
∴[tex]\frac{1}{5}y[/tex] is the correct expression
Answer:
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Step-by-step explanation:
Let us name the deficiency of rainfall last year as [tex]x[/tex] and this year as [tex]y[/tex].
This year is 20% of the last year.
20%=[tex]\frac{20}{100} = \frac{1}{5}[/tex]
[tex]x=\frac{1}{5} y[/tex]
∴[tex]\frac{1}{5}y[/tex] is the correct expression
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Answer:
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