Answer:
The number is 61.9
Step-by-step explanation:
Let
x ----> the original number
Remember that
[tex]100\%-79\%=21\%=\frac{21}{100}[/tex]
we know that
The original number multiplied by the fraction 21/100 must be equal to the number 13
so
The linear equation that model this situation is
[tex]\frac{21}{100}x=13[/tex]
solve for x
Multiply by 100 both sides
[tex]21x=1,300[/tex]
Divide by 21 both sides
[tex]x=\frac{1,300}{21}=61.9[/tex]
