Answer:
The probability that a woman will be picked from room B is 0.34.
Step-by-step explanation:
There are 13 persons in room A, which 10 are women. So, the probability that a woman gets picked to be transfer to room A is 10/13 = 0.77.
Then, in room B there will be a total of 9 persons, assuming that a woman got picked from room A, the probability of that a woman will be picked from room B is 9/4 = 0.44 x 0.77 = 0.34.
Answer:
6
Step-by-step explanation:
The explaination is in the picture
You can use a system of equations to answer this question.
1st: 2.20r + 3p = 700 is showing how to get the total cost.
2nd: r + p = 300 shows how many gallons were sold.
If we solve r + p = 300 for r, we can then solve the first equation in terms of r only.
r + p =300
p = 300 - r Use this in place of p in the first equation.
2.20r + 3p = 700
2.2r + 3(300 - r) = 700
2.2r + 900 - 3r = 700
-900 -900
2.2r - 3r = -200
<u>-0.8r </u>= <u>-200</u>
-0.8 -0.8
r = 250 gallons
There were 250 regular gallons sold and 50 premium gallons sold (300 - 250).