Given the current price of a TV = $600
The current price is the price after 20% cut:
Then let us assume that x is the original price of the TV before reduction.
Then :
Current price = original price - reduction amount
==> 600 = x - (20% * x)
==> 600 = x - ( 20/100) x
==> 600 = x - ( 0.2) x
==> 600 = 0.8 x
Now divide by 0,8
==> x = 600/ 0.8 = 750
Then the original price of the TV before the reduction = $ 750