For this case, we must indicate what was the final cost of the items since the TV has a 20% discount. So, we make a rule of three to determine the discount amount.
545 ---------------> 100%
x -------------------> 20%
Where "x" represents the amount given by the 20% discount.
[tex]x = \frac {20 * 545} {100}\\x = 109\[/tex]
So, on TV you save $ 109.
[tex]545-109 = 436\[/tex]
Payment for TV $ 436
Then the total cost of the two items, excluding taxes, was:
[tex]185 + 436 = 625\[/tex]
Answer:
$ 625
