What are low cost and no cost educational material?

labor costs should be half of what the materials cost

That is not necessarily the case nowadays. Diesel fuel was much cheaper because there were far fewer cars with diesel engines. Since many more cars have diesel engines now the various governments...

raw material cost variable cost because it change with volume of product i.e. the more you produce the more you have to purchase for raw material. Fixed cost are never change with changing in...

No, Conversion cost is the sum of direct labor cost and manufacturing overhead cost.

For instance, where material costs account for 42.9 percent of residential construction, they consume only 32.6 percent of highway and street construction. Overall, 37 cents of every construction...