(Calculation of the minimum solvent rate) In a petrochemical plant, a gas containing 4% cyclo-hexane and 96% inerts has to be treated with a non-volatile absorption oil in a packed tower. It is required to remove 98% of the cyclo-hexane of the feed gas. The feed solvent is free from cyclo-hexane. If the feed gas rate is 80kmol per hour, calculate the minimum solvent rate. The equilibrium relation is given as Y=1+0.8X0.2X