29 A firm generated annual revenue of $75,000 and has accounts payable of $3260. The gross profit margin is 23.2%. The payable days estimated from the data above is closest to 13 25 39 21 R 28 The PP&E gross book value at the start of the month is 47,200, and the CAPEX of the month is 9,930. The accumulated depreciation at the start of the month is 14,600, the depreciation expense of the month is 801. The net book value of PP&E calculated from the data above is 36,215 41,729 46,250 38,119