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Sagot :
x - the percent change
[tex]70-70x=56 \\ -70x=56-70 \\ -70x=-14 \\ x=\frac{-14}{-70} \\ x=\frac{1}{5} \\ x=20\%[/tex]
It's a 20% decrease.
[tex]70-70x=56 \\ -70x=56-70 \\ -70x=-14 \\ x=\frac{-14}{-70} \\ x=\frac{1}{5} \\ x=20\%[/tex]
It's a 20% decrease.
For this case we can make the following rule of three:
70 ----------------> 100%
56 ---------------> x
From here, we clear the value of x.
We have then:
[tex] x = (\frac{56}{70}) * (100)
[/tex]
[tex] x = 80 [/tex]%
Then, the percentage difference is given by:
[tex] 100 - 80 = 20
[/tex]
Answer:
the percent change from 70 to 56 is 20%.
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