denoda1 denoda1
  • 13-03-2021
  • Mathematics
contestada


Including a 10% sales tax, a new watch costs $445.5. Find the cost of the watch before tax.

Respuesta :

centauron114 centauron114
  • 13-03-2021

Answer:

405

Step-by-step explanation:

445.50/1.10= 405 is the answer

Answer Link
sanjaymahara09876543
sanjaymahara09876543 sanjaymahara09876543
  • 13-03-2021

Answer:

cost including tax = $445.5

rate of tax= 10%

cost excluding tax= x(say)

Now,

cost including tax = x + 10% of x

or, 445.5 = x + (10x)/100

or, 445.5 = (10x + x)/10

or, 445.5*10 = 11x

or, 4455/11 =x

or, x = 405

Hence, cost of the watch before tax is $405.

Answer Link

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