Its original quantity is 10 in the new quantity is 3 what is the percent decrease

1 answer:

3 0

This is markdown, thus once again, two equations.
Markdown=Original-New
and
Markdown%=Markdown Amount/Original*100

Markdown=10-3
Markdown=7

Markdown%= 7/10*100
=0.7*100
=70

Thus, the percent decrease/Markdown is 70%.

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The regression equation of Y on X is given by the following formula:

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The table of values is:

The values we need to know are on the following table:

By replacing the known values in the formula we obtain:

$\begin{gathered} b_{yx}=\frac{8\cdot26125-167\cdot995}{8\cdot4649-(167)^2} \\ b_{yx}=\frac{209000-166165}{37192-27889} \\ b_{yx}=\frac{42835}{9303} \\ b_{yx}=4.6 \end{gathered}$

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