Question: A Porter must complete a round trip from a Post Office to the Gas Station and back to the Post Office. The distance between the

A Porter must complete a round trip from a Post Office to the Gas Station and back to the Post Office. The distance between the Post Office and the Gas Station is 100 km. He left the Post Office and took 4 hours to reach a Pharmacy which is between the Post Office and the Gas Station. The Pharmacy is 60 km from the Post Office. He rested at the Pharmacy for 3 hours, then continued his way to the Gas Station in a further 2 hours.

i. Use a scale of 2 cm to represent 1 hour on the horizontal axis and 1 cm to represent 5 km on the vertical axis to draw a distance-time graph for the Porters journey (8 marks)

ii. State how far the Porter is from the Post Office after 3 hours (2 marks)

iii. Calculate the average speed from the Post Office to the Gas Station (3 marks)

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