A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and the
Practice Questions
Q1
A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and then runs for 1 hour, how far does he travel?
7 km
8 km
9 km
10 km
Questions & Step-by-Step Solutions
A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and then runs for 1 hour, how far does he travel?
Step 1: Convert the walking time from minutes to hours. 30 minutes is equal to 0.5 hours.
Step 2: Calculate the distance walked. Use the formula: Distance = Speed × Time. The speed is 4 km/h and the time is 0.5 hours. So, Distance walked = 4 km/h × 0.5 h = 2 km.
Step 3: Calculate the distance run. The running speed is 10 km/h and the time is 1 hour. So, Distance run = 10 km/h × 1 h = 10 km.
Step 4: Add the distance walked and the distance run to find the total distance. Total distance = Distance walked + Distance run = 2 km + 10 km = 12 km.
Distance Calculation – Understanding how to calculate distance using the formula distance = speed × time.
Unit Conversion – Converting time from hours to hours in decimal form (e.g., 30 minutes to 0.5 hours).