When answering word questions, change the words into numbers/math symbols.
If the temperature in Coast City is 3 degrees below zero, then it is "-3º F".
Because the next sentence is more complex, we should break it down into two parts since it is really asking two questions: "What is the temperature that is twice as cold as Coast City's temperature?" and "What is 5ºF colder than twice Coast City's temperature?"
To answer the first question, we change the phrase "twice as cold" to numerical symbols. When something is twice as big/cold/old/small/etc of something, it means you must multiply the original number by 2. Since the temperature of Coast City is -3ºF, then twice that temperature is -3 x 2 = -6. So twice the temperature of Coast City is -6ºF. Now we must answer the second question. What is 5ºF colder than -6ºF? Converting this to numbers and mathematical equations, we get "-6 – 5 = ?" This answer to this is "-11". So 5ºF colder than -6ºF is -11ºF. So A, -11ºF is the answer.
