The cost of$c of transport goods is directly proportional to distance d km the cost of transporting goods over a distance of 60 km
is $100
(i) Find an equation connecting C and D
(ii) Find the cost transporting goods over a distance of 45 km
(iii) If the cost of transporting goods is $120, calculate the distance covered.
(iv) Draw the graph of C against d.
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Answer:
(i) 100d - 60c =0
(ii) $75
(iii) 160 km
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