a factory has skilled and unskilled workers. The skilled workers are paid #3000 per day and unskilled #1200 per day .if the total number of workers is 40 with a daily bill of #66000,how many workers are skilled

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap