the price of an object was increased by r%.later it was decreased my r%.if the final price of the object is Rs 1.find the initial price
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Aninda14:
can u tell me how u derived the 3rd step
take all thing right side left x only there
then all numerator numbers come in denominator
(100-r)(100+r) for this u can use (a-b) (a+b)
=a²-b²
or u can do simply multiple
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