Here. If we notice the statements of Q15.
Pressure is increased to 1 and a half and temp is increased by 1/3 of Abs.Temp.
So , 1st one means because of ‘to’ that pressure value is changed from 1 to 1+1/2. For temp , it is increased ‘by’. Therefore 1/3 of absolute temp(Defined as 273) + Temperature at initial value in Q which is 273K
Am I right ?