Ahand-held digital music player was marked down by 1/4 of the original price. a. if the sales price is $128.00, what is the original price? b. if the item was marked up by 1/2 before it was placed on the sales floor, what was that the store paid for the digital player.?

a) The original price of music player is $170.66

b)If the item was marked up by 1/2 before it was placed on the sales floor, the store paid $213.325 for the digital player.

Step-by-step explanation:

Let the original price be x

A hand-held digital music player was marked down by 1/4 of the original price.

So, Discount =

So, Sale price =

We are given that  the sales price is $128.00

So,

a) The original price of music player is $170.66

The item was marked up by 1/2 before it was placed on the sales floor.

So, Cost =

Cost =

b)If the item was marked up by 1/2 before it was placed on the sales floor, the store paid $213.325 for the digital player.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x