An apartment building has the following distribution of apartments:
1 bedroom 2 bedroom 3 bedroom
1st floor 3 1 1
2nd floor 2 2 2
3rd floor 1 4 1
if an apartment is selected at random, what is the probability that it is on the 2nd floor or has 2 bedrooms?
a) 7/11
b) 6/11
c) 13/17
d) 11/17

To calculate the probability of selecting the probability of any apartment is 1/3. But we won't take it into account.

Also, to be on the second floor the probability comes out to be 6/17

Furthermore, selecting a 2 bedroom apartments probability comes out to be 7 /17.

So finally you can add all of them as they are independent events. 6/17 + 7/17/ = 13/17.

Hence the answer is C. 13/17

9 sandwiches per hour

step-by-step explanation:

when we have a rate, we want a 1 in the denominator

27/3 = 9

27 sandwiches/ 3 hours = 9 sandwiches/hour