A person walks 4 km at a speed of 4 km/h and then runs 3 km at a speed of 6 km/h
Practice Questions
Q1
A person walks 4 km at a speed of 4 km/h and then runs 3 km at a speed of 6 km/h. What is the total time taken? (2020)
1 hour
1.5 hours
2 hours
2.5 hours
Questions & Step-by-Step Solutions
A person walks 4 km at a speed of 4 km/h and then runs 3 km at a speed of 6 km/h. What is the total time taken? (2020)
Step 1: Identify the distance walked, which is 4 km.
Step 2: Identify the speed while walking, which is 4 km/h.
Step 3: Calculate the time taken to walk using the formula: Time = Distance / Speed. So, Time walking = 4 km / 4 km/h = 1 hour.
Step 4: Identify the distance run, which is 3 km.
Step 5: Identify the speed while running, which is 6 km/h.
Step 6: Calculate the time taken to run using the same formula: Time = Distance / Speed. So, Time running = 3 km / 6 km/h = 0.5 hours.
Step 7: Add the time walking and time running to find the total time. Total time = 1 hour + 0.5 hours = 1.5 hours.
Speed, Distance, and Time – Understanding the relationship between speed, distance, and time, and how to calculate time taken for different segments of a journey.
