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A sample of automobiles was selected, and each was subjected to a 5-mph crash test. Denoting a car with no visible damage by S (for success) and a car with such damage by F, results were as follows:

Out of 50 cars tested, 30 showed no visible damage. What is the success rate of the crash test?

A) 30/50
B) 20/50
C) 1/3
D) 2/5

Answer :

Final answer:

The success rate of the crash test is calculated by dividing the number of cars with no visible damage by the total number of cars tested, which is 30/50, equivalent to 3/5 or 60%.

Explanation:

The question asks us to calculate the success rate of a crash test involving automobiles. Out of 50 cars tested, 30 showed no visible damage. To find the success rate, we divide the number of successful tests (where success is defined as having no visible damage) by the total number of tests conducted.

The success rate is calculated as follows:

  1. Number of cars with no visible damage (S): 30
  2. Total number of cars tested: 50
  3. Success rate = S / Total number of cars tested
  4. Success rate = 30/50
  5. Success rate = 0.60

Thus, the success rate of the crash test is 30/50, which can be simplified to 3/5 or converted to a percentage, 60%.

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