A person walks at 4 km/h and runs at 10 km/h. If he walks for 30 minutes and the

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Question: 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?

Options:

Correct Answer: 9 km

Solution:

Distance walked = 4 * 0.5 = 2 km; Distance run = 10 * 1 = 10 km; Total distance = 2 + 10 = 12 km.

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?

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).