An ol television was sold for $30 at a loss of20%. find cost in price with explanation

Match the term on the left with its image or description on the right. match term definition diameter a) circle a and a line segment connecting points b and c which are on the circle. circumference b) circle a and a line segment connecting points b and c which are on the circle. radius c) a piece of the circumference of a circle secant d) two circles that share the same center. concentric circles e) the distance around a circle arc f) a segment between two points on a circle that passes through its center

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?

Which one ? is the answer and how to find this answer