<span>From the given ((E) (U)), the
sample space for the experiment</span> is {EE, EU, UE, UU}. I am hoping that this answer has
satisfied your query and it will be able to help you in your endeavor, and if
you would like, feel free to ask another question.
1. The combined volume of all the tanks at the aquarium is written in Scientific notation. Keeping this on mind, you can write it as following:

2. Now, you must sum the combined volume of all the tanks and the volume of the new tank to calculate the total volume of all of them:
3. Now, you can write the result in Scientific notation, as following:

The answer is: 
They each get 14 cents,
A quarter = 25c
A nickel = 5c
A dime = 10c
2 pennies = 2c
25 + 5 + 10 + 2 = 42c
42 divided by 3 is 14 cents
So Willie, Donald and Maya get 14 cents each