Question: Math 789 : Engineer Maruf, working at a state-of-the-art air conditioning testing laboratory in Tejgaon Industrial Area, is tasked with evaluating the cooling efficiency of

Math 789 : Engineer Maruf, working at a state-of-the-art air conditioning testing laboratory in Tejgaon Industrial Area, is tasked with evaluating the cooling efficiency of a newly developed split AC unit. To assess indoor air performance, he collects psychrometric data in the test chamber. The recorded conditions show a dry bulb temperature of 30C and a wet bulb temperature of 25C. Maruf refers to the psychrometric chart to estimate the relative humidity of the air sample. This will help determine whether the AC unit can maintain desired comfort levels without overcooling or under-dehumidifying the air. Based on this data, what is the approximate relative humidity in %

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