Franklin independents drove its feet of trucks 90,000 kilometres in July, which cost $40,500 and 120,000 kilometres in August, which cost $50,400. Using the high-low method, estimate the costs for 100,000 Wlometres to be driven in September. Show your work. For the toolbar, press ALT+F10 (PQ or ALT+FN+F10 (Mac)