10. Car firms buy in raw materials (steel), intermediate goods (windscreens, tyres) and labour to make cars. Windscreen and tyre companies hire workers and also buy raw materials from other industries. What is the value added of the car industry (the three firms shown below)? Producer of Output Intermediate goods used Raw materials Labour input used Cars 1000 250 100 100 Windscreens 150 10 50 Tyres 100 10 30