a. Use the inclusion/exclusion principle.
b. By definition of conditional probability,
Answer:
length x width
Step-by-step explanation:
The formula for area of a square is A = lw
-4x + 2x = -2x
6 + 5 = 11
Therefore, 11 - 2x = 0
11 = 2x
x = 11/2 = 5.5
60 divide dos by 15 is 4, so it takes 4 minutes for each person to empty it.
25 x 4 = 100, so the answer would be 100 minutes.