If you add up the two amounts that he spent then you can get the total amount.
this is very easy.
if he started at a temperature of 12, then added 8 and added 13 onto that? the sum of those numbers would be 33. so 33 degrees Celsius
2:45 + 2:15 + 0:45 + 2:30
x = 4
i am smart
Answer:the range is 0, and your wording is very hard to decipher sorry about this