The silver town people went to a fancy restaurant after the big event. grammy gave the server a 15$ tip. if the tip was 20% of the cost of dinner, how much was dinner. what is the answer

$15

Step-by-step explanation:

Let d represent the cost of the dinner before tip.  Then $15 = 0.20d, since 0.20 is the decimal fraction corresponding to 20%.

Solving for d, the cost of the dinner, we divide both sides of the equation $15 = 0.20d by .20, obtaining:

        $15

d = = $75

         0.20

The cost of the dinner before tip was $75.

3x + 4y -25 =0 represents the amount of change sianna should recieve

step-by-step explanation: