Answer :
You have to add 13.5+273.15 = 286.65
And for the other extreme 18.5+273.15= 291.65
So the temperature in kelvin would be between 286.65 and 291.65
And for the other extreme 18.5+273.15= 291.65
So the temperature in kelvin would be between 286.65 and 291.65