The first number is 27 and the second number is 45 so the ratio would be 27;45
The answer would be 114. I did 3 times 38 and thats what i got. I hope it helps:D This is from your friendly Tolkien fan.

This is equal to...

We want "x" so we need to isolate it using laws of exponents...

because 
because ![x^{a/b}=\sqrt[b]{x^{a}}](https://tex.z-dn.net/?f=x%5E%7Ba%2Fb%7D%3D%5Csqrt%5Bb%5D%7Bx%5E%7Ba%7D%7D)
x = 4
answer: B
Ya got to go $660 + 7% hours later on $450 hours later 00.578 to finish