If the temperature drops, then you must have subtract amount of drop from initial temperature.

The correct answer is the first one.
Answer:
0.05 in decimal form
Step-by-step explanation:
I don't know if you accidentally left something out but if you did I can edit my answer or put the answer in the comments.
10*5+10*5*1 I think this is the right way
Answer:
14% and 1/7
Step-by-step explanation: