19. the probability that roberto wins is the
probability that roberto loses. what is the
probability that roberto loses?
-
who ales

Roberto wins:1/4

roberto loses:3/4

Step-by-step explanation:

Roberto wins:1/4

roberto loses:3/4

Step-by-step explanation:

9.25%

Step-by-step explanation:

Hi, to answer this first we have to calculate the amount of the tax paid, by subtracting the price of the book (40) to the total price paid (43.70)

43.70-40 = 3.7

So, $40 is the price of the book. It’s the 100% of the price. $40/100%

For 3.7 = 3.7/100

$40/100%= $3.7/x%

40/100 =3.7/x

x = 3.7/ (40/100)

x=9.25%

Feel free to ask for more if needed or if you did not understand something.