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ElQueDijimos

$210 x .09 = $18.90 is the increase...
so the price 2014 was $191.10

Answer:

The old selling price is $192.66

Step-by-step explanation:

Let the price in 2014 be x

Now the price in 2015 is 9 % more

So, price in 2015 = @@MATH_TOKEN_0@@

                             = @@MATH_TOKEN_1@@  

                             = @@MATH_TOKEN_2@@  

We are also given that In 2015 the price of business math text Rose is $210.

So, \(\frac{109}{100}x=210\)  

\(x=210 \times \frac{100}{109}\)  

\(x=192.66\)  

Hence The old selling price is $192.66