A mixture of two gases A and B, exists at pressure p_1, volume V, and Temperature T_(1,) Gas A is subsequently removed from the mixture in a constant-volume process. The remaining gas B is found to have a pressure p_(2,) volume V, and temperature T_2. Express the ratio of the number of moles of gas B to the number of moles of gas A in the original sample in terms of the given pressure, volume, and temperatures.