Answer: 220 kilometers per hour
Explanation:
From the question, we are informed that Wendy travelled on the Eurostar train from St Pancras station to the Gare du Nord station and that the Eurostar train travelled a distance of 495 km and the journey time was 2 hours 15 minutes.
The average speed will be the distance taken divided by the time used. We've to convert 2 hours 15 minutes to hours first. It should be noted that 60minutee make 1 hour, therefore 2 hours, 15 minutes will be:= 2hours × (15/60)
= 2.25 hours
Speed = Distance/Time
Speed = 495/2.25
Speed = 220kilometer per hour