contestada

Caitlin lives in Wollongong and travels to Sydney daily.
The car trip requires her to travel at different speeds. Most often she travels 30 kilometres at 60 km/h and 40 kilometres at 100 km/h.


What is her average speed (in km/h) when traveling to Sydney? (Answer correct to two decimal places.)​

Respuesta :

LODZYBELLS

Answer:

Average Speed ≅ 82.86 km/h

Step-by-step explanation:

Total distance of the trip is 30 + 40 (kilometres) = 70km

Total speed covered in each trip will be (30km * 60km/h) + (40km * 100km/h) = 5800km²/h

Therefore Average Speed = [tex]\\\frac{Total speed covered in each trip}{Total distance of the trip}[/tex]

                                            =[tex]\frac{5800kM^{2} /H}{70kM}[/tex] =   82.8571 to 2 decimal places

                                                   ≅ 82.86 km/h

Otras preguntas