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baherus [9]
3 years ago
10

A 23% increase followed by a 17% decrease is what percent change?

Mathematics
2 answers:
AVprozaik [17]3 years ago
7 0
A 2.09% increase.

This is just some simple multiplication. A 23% increase is the same as multiplying by 1.23, and a 17% decrease is like multiplying by 0.83, since 100-17=83. Just multiply 1.23*0.83, which equals 1.0209, or a 2.09% increase.
Inessa05 [86]3 years ago
4 0

Answer: 2.09% increase

<u>Step-by-step explanation:</u>

Let x = the original amount. then

23% increase is: x(1 + 0.23) = 1.23x

and a 17% decrease is 1.23x(1 - 0.17)

                                   = 1.23x(0.83)

                                   = 1.0209x

x was the original amount and 1.0209x is the new amount.

The percent change is: \dfrac{new-original}{original}=\dfrac{1.0209x-x}{x}=\dfrac{0.0209x}{x}=0.0209

Since the result is positive, it represents an increase.

Move the decimal two places to the right to convert the number to percent.

+0.0209 = 2.09 increase

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