A and B start a race together. A runs at 10 km/h and B at 8 km/h. How far apart

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Question: A and B start a race together. A runs at 10 km/h and B at 8 km/h. How far apart will they be after 30 minutes?

Options:

Correct Answer: 1 km

Solution:

In 30 minutes, A runs 5 km and B runs 4 km. Distance apart = 5 km - 4 km = 1 km.

A and B start a race together. A runs at 10 km/h and B at 8 km/h. How far apart will they be after 30 minutes?

A and B start a race together. A runs at 10 km/h and B at 8 km/h. How far apart will they be after 30 minutes?

Step 1: Convert 30 minutes into hours. Since there are 60 minutes in an hour, 30 minutes is equal to 0.5 hours.
Step 2: Calculate the distance A runs in 0.5 hours. A runs at 10 km/h, so distance = speed × time = 10 km/h × 0.5 h = 5 km.
Step 3: Calculate the distance B runs in 0.5 hours. B runs at 8 km/h, so distance = speed × time = 8 km/h × 0.5 h = 4 km.
Step 4: Find the distance apart by subtracting the distance B ran from the distance A ran. Distance apart = 5 km - 4 km = 1 km.

Relative Speed – Understanding how to calculate the distance covered by two objects moving at different speeds over the same time period.
Time Conversion – Converting time from hours to minutes to calculate distance accurately.