Mr Joshi drove a distance of 15 km ata uniform speed of 45 km/hr. Then

1.	Mr Joshi drove a distance of 15 km ata uniform speed of 45 km/hr. Then hetravelled a further 22 km at a differentspeed. If the average speed of the wholejourney 44.4 km/hr what was the speedhe drove at the second of part ofthe journey?
Answer» Step-by-step explanation: Find the time taken for the First 15KM: SPEED = 45 km/h (Given) Time = distance ÷ speed Time = 15 ÷ 45 = 1/3 hour Find the time taken for the WHOLE journey: Distance = 15 + 22 = 37 km Speed = 44.4 km/h Time = Distance ÷ Speed Time = 37 ÷ 44.4 = 5/6 hours Find the time taken for the second part of the journey: 5/6 - 1/3 = 1/2 hour Find the speed for the second part of the journey: Speed = Distance ÷ time Speed = 22 ÷ 1/2 = 44 km/h Answer: The speed at the second part of the journey was 44 km/h

Mr Joshi drove a distance of 15 km ata uniform speed of 45 km/hr. Then hetravelled a further 22 km at a differentspeed. If the average speed of the wholejourney 44.4 km/hr what was the speedhe drove at the second of part ofthe journey?

Answer»

Step-by-step explanation:

Find the time taken for the First 15KM:

SPEED = 45 km/h (Given)

Time = distance ÷ speed

Time = 15 ÷ 45 = 1/3 hour

Find the time taken for the WHOLE journey:

Distance = 15 + 22 = 37 km

Speed = 44.4 km/h

Time = Distance ÷ Speed

Time = 37 ÷ 44.4 = 5/6 hours

Find the time taken for the second part of the journey:

5/6 - 1/3 = 1/2 hour

Find the speed for the second part of the journey:

Speed = Distance ÷ time

Speed = 22 ÷ 1/2 = 44 km/h

Answer: The speed at the second part of the journey was 44 km/h

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