The cost of a blackberry phone at John's Electrontics is $249.99. this cost includes a twelve percent sale tax. How much is the initial cost of the phone.
To find the price without the sale tax you find the opposite of 12%, which would be 88%. Then you multiply .88 by 249.99 to get 219.9912, and since it is money you round to the hundreth to get 219.99.
