Multiple choice

A car cover a distance of 330 km in a certain amount of time at speed of 55 km/h. What is the average speed of bike that cover distance of 15 km less than car in 1 hour less than time taken by car?

  1. $50 km/h$
  2. $60 km/h$
  3. $63 km/h$
  4. $65 km/h$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Car time = 330 / 55 = 6 hours. Bike distance = 330 - 15 = 315 km. Bike time = 6 - 1 = 5 hours. Bike speed = 315 / 5 = 63 km/h.

AI explanation

The car takes 330 / 55 = 6 hours to complete its journey. The bike covers 15 km less, which is 315 km, and takes 1 hour less, which is 5 hours. Using the formula Speed = Distance / Time, the bike's average speed is 315 / 5 = 63 km/h.

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