Question

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%?

Answer 1

we get that for the question A:

`45(1+0.3)=58.5`

It sells by $58.5

We get that for question B

`x=(104)/(1.3)=80`

so the store paid 80 for it

We get that for question C

`(100)/(75)-1=(4)/(3)-1=(1)/(3)=0.333333`

so the store did a mark up of 33%