Five years ago, a typical 70” tv cost about $2400. now a similar tv costs approximately $1680. what is the percent decrease in tv price?

The percentage decrease in TV price after five years is 6.89

Step-by-step explanation:

Given as :

The cost of TV five years ago = $ 2400

The present cost of TV = $ 1680

Let The decrease percentage in five years = x

So, The cost of TV after T year = Present cost ×  

Or, $ 1680 = $ 2400 ×  

Or, 0.7 =    

Or,   = 1 -

Or, 0.9311 = 1 -

Or,  = 1 - 0.9311

∴,  = 0.0689

I.e x = 0.0689 × 100 = 6.89

Hence The percentage decrease in TV price after five years is 6.89 Answer

its adding 5.5 each time

step-by-step explanation: