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The average time taken by a bike and a car to travel 500 m is 14.5 seconds. The average time taken by a bike, a car and a bus to travel 500 m is 17.5 seconds. Find the time taken by the bus to travel 500 m. Notes to students: 1. Round your answer off to 2 decimal places
The average height of building A, building B and building C is 40 m and 85cm. The average height of building B and building C is 41 m 54 cm. Find the height of building A. Notes to students: Round your answer off to 2 decimal places