Amusic player was marked down by 1/4 of the original price.
a. if the sales price is $128, what is the original price?
b. if the music player was marked up by 1/2 before it was placed on the sales floor, what was the price that the store paid for the player?
c. what is the difference between the discount price and the price that the store paid for the music player?

anyone : ( it is due tmm
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a) $170.67

b) $198

c) $27.33

Step-by-step explanation:

a)Let the original price be $ ;

Thus,

Thus the original price is $170.67.

b)

If the music player was marked up before the sale, then the original price is increased. That is ,

Let's say the new original price to be ;

∴

Now this price is marked down by .

∴

Thus the price the store paid will be $198;

c)

The difference is $198-$170.67 = $27.33

the answer is b.)

< 1=< 2

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point