Please answer correctly for great rating

A sample of methane gas at a pressure of 848mmHg and a temperature of 46C, occupies a volume of 9.95 liters. If the gas is cooled at constant pressure to a temperature of 10C, the volume of the gas sample will be A sample of helium gas occupies a volume of 9.02L at 49.0C and 0.890atm. If it is desired to decrease the volume of the gas sample to 6.54L, while increasing its pressure to 1.11 atm, the temperature o gas sample at the new volume and pressure must be nC