Question

Please help with this! Jen is deciding to get a new phone. One deal is a free phone with a two year contract, but she will have to pay the sales tax of 8% on the original price of $399 and the monthly charge is $10 more than she currently pays. The other is on sale for $199, plus 8% sales tax. The monthly charge is the same as what she currently pays. Over the two year contract period, which phone will be the lower cost and by how much?

Answer 1

All you have to do is add 399 to 10 and then multiply by ten. Then you get 199 and multiply by .08 and multiply that by ten. Then you subtract.