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Monica paid tax of $3.20 when she bought a new bike helmet . if the tax rate was 8% how much did the store charge for the bike helmet before tax?

Respuesta :

Monica paid tax of $3.20 when she bought a new bike helmet . if the tax rate was 8% .

8 % of x = 3.20

8/100 x X = 3.20

8 x / 100 = 3.20

8x = 3.20 x 100

8 x = 320

Divide both sides by 8

x = $40

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