A US resident traveling in Japan notices that the temperature in degrees F is easily calculated to be 3.2 times the temperature in degrees C. What is the temperature?

Question

Quizplus · Accepted Answer

Let's assume the temperature in degrees Celsius is x. Then, the temperature in degrees Fahrenheit can be calculated as 3.2x. 
We know that the formula for converting Celsius to Fahrenheit is F = (9/5)C + 32. 
So, we can set up an equation to solve for x: 
3.2x = (9/5)x + 32 
Solving for x, we get x = 23. 
Therefore, the temperature in degrees Celsius is 23 and the temperature in degrees Fahrenheit is 3.2(23) = 73. This matches choice C.

A US Resident Traveling in Japan Notices That the Temperature ∘\circ∘

A US Resident Traveling in Japan Notices That the Temperature $\circ$