Question

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?

Answer 1

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.