A sign says that the price marked in all music instruments equipment is 30% off the original price. You buy a guitar of $315. What is the original price?

Respuesta :

erinck

Answer:

$450

Step-by-step explanation:

Lets make a proportion: 315/x = 70/100

Now lets cross multiply: (315) * (100) = 70* x

Multiply:  31500 = 70x

Solve for x: x = 31500/70, x = 450

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