Such appraisers shall within twenty days from the time of filing their oaths appraise all lots, blocks, parts or parcels of land mentioned and described in the petition, order and decree of said court at their just and full cash value and when their appraisement has been completed, forthwith file in the office of the clerk of such district court a report of their actions and doings and appraisements verified by their respective oaths. In case of the members of said board not agreeing in their appraisement, the valuation and appraisement of the majority of said members of the board shall control and fix the valuation and appraisement of the respective lots, blocks, parts and parcels of land appraised. Each of such appraisers shall receive three dollars [($3.00)] a day for his services, but in no case shall more than five days be charged for making such valuation and appraisement.