The difference between the solutions to the equation x squared = a is 30. What is a? Show that your answer is correct.
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Let the price at which she sells the hi-fi set be x ~
The Money that she lose at the end of 2 years :
Loss percentage is equal to :
So, the money she end up getting after selling that hi-fi set is 2500, that is also the money She have at the end of the two years ~