The number of water bottles used during a teams football practice varies directly with the temperature. if a team uses 75 water bottles when the temperature is 60 degrees, what is the temperature if they use 120 bottles?

Supposing the temperature of 60 degrees increases twice, it becomes 120  degrees (100% increase) and the bottles increase twice as well to 150 bottles (100% increase). 

If there are 120 bottles used, we can calculate the temperature using the above assumption when bottle usage increase to 100% which is 150 bottles. 

120 bottles/ 150 bottles = 0.8 or 80%

So, if 100% increase in temperature is defines by 120 degrees, what is 80% of 120 degrees?  

Then 120 degrees divided by 0.8 will result to 96 degrees (so the answer is letter D) -- the temperature when 120 bottles were used by athletes.