A sandy fill will be placed on a site. A specimen was obtained from point A and taken to the lab for testing. The following parameters were obtained: compression index $=0\mathrm{.}34,$ recompression index $=0\mathrm{.}05,$ void ratio $=0\mathrm{.}8,$ preconsolidation stress $=430$kPa, and coefficient of consolidation $=0\mathrm{.}06\frac{m^2}{?}$ day. Determine the time it takes for the layer to consolidate $80\%.$ Show your work and circle your answer.

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