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HELP ME ASAP!!!!!!!!

A cell phone costs $299 and is now on sale for 30% off.

1) The discount is-
.


2) The cost after discount is-
.



3) The final cost including 5% sales tax is-

Sagot :

Answer:

Step-by-step explanation:

1) 30 : 100 = x : 299

x = (30 x 299)/100

x = 89,70 $

2) 299 - 89,70 = 209,30 $

3)  5 : 100 = x : 209,30

x = 10,465 $

209,30 + 10,465 = 219,77 $

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