======================+===========+============+============= | | | Percentage | | Percentage | of total |Approximate| of total | cost of all | average | cost of |the operating | cost per | operating |expenses of | mile run. |locomotives.| railroads. ----------------------+-----------+------------+------------- Fuel | 6.0 cts. | 0.30 | .03 ----------------------+-----------+------------+------------- Oil and waste | 0.4 cts. | 0.02 | .004 ----------------------+-----------+------------+------------- Wages of locomotive | | | runners and firemen | 6.0 cts. | 0.30 | .06 ----------------------+-----------+------------+------------- Repairs of locomotives| 7.0 cts. | 0.35 | .07 ----------------------+-----------+------------+------------- Cleaning locomotives | 0.6 cts. | 0.03 | .006 ----------------------+-----------+------------+------------- Total | 20.0 cts. | 1.00 | .20 ======================+===========+============+============= From this table it will be seen that the locomotive expenses are 20 per cent. of the whole cost of operating railroads. This cost of course varies under different circumstances. The above is probably somewhat lower than the average cost in this country. QUESTION 447. _How many miles do locomotives ordinarily run per ton of coal and per cord of wood?_