My story on how I actually stopped an alien invasion using proportion

An alien has landed from another planet. It crash landed in my backyard. The alien said to me that "if you can't solve 3 questions then say goodbye to your earth" and so I have to answer his 3 questions, but if I make any of the 3 questions wrong then my planet is gone, and I mean long gone!

The aliens tested me if i can get proportion in all 3 questions right so i took on the challenge.

8. Determine the missing value

a) 2 10 b) 7 14
- = - - = -
3 15 5 35



c) 30 6 d) 3 12
- = - - = -

45 9 6 36


13. Two quarters have the same value as ten nickels. What is the value of five quarters in nickels?

Quarters
---------- = 2 5
Nickels - = -
10 25

so the answer is 25 nickels in 5 quarters.


Ahh oh no, now they gave me their ultimate question which is hard.


6. Delia was paid $35 for 5 h of babysitting.
How much should she receive for 3h?
Use a unit ration to find out the answer.

She will receive $21 for 3 hours of babysitting



In the end the aliens said that "you have answered all the questions right and then they wont destroy the planet. After they left I went back to my house and say that "nothing happened "