1. a music store marks up the instruments it sells by 30%. a. if the store bought a guitar for $45, what will be its store price? b. if the price tag on a trumpet says $104, how much did the store pay for it? c. if the store paid $75 for a clarinet and sold it for $100, did the store mark up the price by 30%?

A. $ 58.50

B. $ 80

C. No, it did not mark up 30%.

Step-by-step explanation:

Since,

A. We have,

Mark up percentage = 30%

Actual price = $ 45,

B. We have,

SP = $ 104,

C.  We have,

AP = $ 75,

SP = $100,

Thus, mark up percentage =

= 33.33 %

Hence, store did not mark up the price by 30%.

A) Store Price = $58.5

B) Actual Price = $80

C) Store did not mark up the price by 30%.

Step-by-step explanation:

Given :

Mark up percentage = 30%

Formula using :

  ------- (1)

Calculation :

A) Actual Price = $45

Now, from equation (1)

SP = $58.5

B) SP = $104

Now, from equation (1)

AP = $80

C) AP = $75

    SP = $100

From equation (1),

Mark up percentage = 33.33%

Store did not mark up the price by 30%.

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