The pressure of a gas is 35 atmospheres at a temperature of 48 (degrees) C with constant volume. What will the new pressure be if the temperature is increased to 36 (degrees) C?

I have news for you. A change in T from 48 C to 36 C is a decrease, not an increase. (P1/T1) = (P2/T2)

Remember to use T in kelvin, not C.