The dinner will cost $250 today.
Explanation
The price of a four-star dinner was $100 two decades ago and now the cost of the dinner is 250% of what it was 20 years ago.
So for finding the current cost, we will find 250% of $100 .
First we need to make 250% as decimal form after dividing it by 100. So....
250% = [tex]\frac{250}{100}= 2.50[/tex]
Now we will multiply this 2.50 with $100 for getting the current cost of the dinner.
Thus, the current cost [tex]=(100* 2.50)dollar = 250 dollar[/tex]
