A can run a race in 80 seconds, while B can run it in 100 seconds. What is the p

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Question: A can run a race in 80 seconds, while B can run it in 100 seconds. What is the percentage by which A is faster than B?

Options:

Correct Answer: 20%

Solution:

Percentage faster = ((100 - 80) / 100) * 100 = 20%.

A can run a race in 80 seconds, while B can run it in 100 seconds. What is the percentage by which A is faster than B?

A can run a race in 80 seconds, while B can run it in 100 seconds. What is the percentage by which A is faster than B?

Step 1: Identify the time taken by A to run the race, which is 80 seconds.
Step 2: Identify the time taken by B to run the race, which is 100 seconds.
Step 3: Calculate the difference in time between B and A. This is 100 seconds (B) - 80 seconds (A) = 20 seconds.
Step 4: To find out how much faster A is compared to B, divide the difference (20 seconds) by B's time (100 seconds). This gives you 20 / 100 = 0.2.
Step 5: Convert the decimal (0.2) into a percentage by multiplying by 100. So, 0.2 * 100 = 20%.
Step 6: Conclude that A is 20% faster than B.

Speed Comparison – Understanding how to compare speeds of two individuals based on their completion times.
Percentage Calculation – Calculating the percentage difference in speed using the formula for percentage increase.