A motorist has to travel 3.50 km in a city with an average speed not exceeding to 25 km/h . If the average speed increases to 40 km/h. What is time he will gain from his journey
See previous post: Thu, 11-7-14, 6:30 AM.
To find the time gained in the journey, we need to calculate the time taken at the average speed of 25 km/h and compare it to the time taken at the increased speed of 40 km/h.
First, let's find the time taken at the average speed of 25 km/h:
Time = Distance / Speed
Time = 3.50 km / 25 km/h
Time = 0.14 hours (rounded to two decimal places)
Next, let's find the time taken at the increased speed of 40 km/h:
Time = Distance / Speed
Time = 3.50 km / 40 km/h
Time = 0.088 hours (rounded to two decimal places)
To calculate the gained time, we subtract the time taken at the increased speed from the time taken at the average speed:
Gained Time = Time at Average Speed - Time at Increased Speed
Gained Time = 0.14 hours - 0.088 hours
Gained Time = 0.052 hours (rounded to two decimal places)
Therefore, the motorist will gain approximately 0.052 hours from his journey when the average speed increases from 25 km/h to 40 km/h.