39. One thousand kilograms per hour of a material with 30% moisture content (d.b.) is dried in a belt conveyor drier with a capacity of 50 kg of bone dry solid per meter of drier. The total drying time is 5.3 hours. Estimate the length of the drier. a 74.2 m b. 81.5 m d. 98 m c. 106 m

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