Apple slices are dried from a moisture content of 65% (dry basis) to 10% (dry basis) in a hybrid solar dryer under falling rate period. The apple slices have a drying rate constant of \( \frac{1}{104} \) minute\(^{-1}\). Considering an equilibrium moisture content of 2% (dry basis), the time required for drying is _________ minutes. (Rounded off to 2 decimal places)