90. The number of daily evening newspapers in the United States has decreased by 46.5% to
389 newspapers between 2000 and 2015. How many daily evening newspapers were there in
2000? I

Respuesta :

Answer:

700

Step-by-step explanation:

Given:

Daily evening newspapers in 2015 = 389

Percentage decrease from 2000 to 2015 = 46.5%

To find:

Number of newspapers in 2000 = ?

Solution:

Let the number of newspapers in 2000 = [tex]x[/tex]

When 46.5% of the total newspapers in 2000 ([tex]x[/tex]) is subtracted from the total  newspapers in 2000 ([tex]x[/tex]), it will be equal to the number of newspapers in 2015.

Making the equation as per the given statement:

[tex]x-x\times 46.5\%=389\\\Rightarrow \dfrac{100x-46.5x}{100}=389\\\Rightarrow 53.5x=38900\\\Rightarrow x\approx \bold{727}[/tex]

Therefore, the answer is:

There were 727 newspapers in 2000.