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A can complete a race in 120 seconds, while B can complete it in 180 seconds. Ho

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Question: A can complete a race in 120 seconds, while B can complete it in 180 seconds. How much time will A be ahead of B when they finish the race?

Options:

  1. 30 seconds
  2. 40 seconds
  3. 50 seconds
  4. 60 seconds

Correct Answer: 40 seconds

Solution: 

A finishes in 120 seconds, B in 180 seconds. A is ahead by 180 - 120 = 60 seconds.

A can complete a race in 120 seconds, while B can complete it in 180 seconds. Ho

Practice Questions

Q1
A can complete a race in 120 seconds, while B can complete it in 180 seconds. How much time will A be ahead of B when they finish the race?
  1. 30 seconds
  2. 40 seconds
  3. 50 seconds
  4. 60 seconds

Questions & Step-by-Step Solutions

A can complete a race in 120 seconds, while B can complete it in 180 seconds. How much time will A be ahead of B when they finish the race?
  • Step 1: Identify the time it takes for A to complete the race, which is 120 seconds.
  • Step 2: Identify the time it takes for B to complete the race, which is 180 seconds.
  • Step 3: Calculate the difference in time between B's finish time and A's finish time by subtracting A's time from B's time: 180 seconds - 120 seconds.
  • Step 4: The result of the subtraction is 60 seconds, which means A finishes 60 seconds ahead of B.
  • Relative Speed – Understanding how to compare the completion times of two competitors in a race.
  • Time Difference Calculation – Calculating the difference in time taken by two individuals to determine how much one is ahead of the other.
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