Question: A clock strikes 4 taking 9 seconds. In order to strike 12 at the same rate, the time taken is
- 33 seconds
- 30 seconds
- 36 seconds
- 27 seconds
- 42 seconds
“A clock strikes 4 taking 9 seconds.”- is a topic of the GMAT Quantitative reasoning section of GMAT. This question has been taken from the book “GMAT Quantitative Review”. To solve GMAT Problem Solving questions a student must have knowledge about a good amount of qualitative skills. The GMAT Quant topic in the problem-solving part requires calculative mathematical problems that should be solved with proper mathematical knowledge.
Approach Solution 1:
Here in the above question, we can see that there are 3 clocks that strike 4 times.
Hence, the 3 intervals equals 9 seconds. Therefore, Time taken for 1 interval equals 3 seconds. In order to strike 12 times, there are 11 intervals, for which the time taken is 11 multiplied by 3 seconds. That makes the answer 33 seconds. Therefore, the required time taken is 33 seconds.
Correct Answer: A
Approach Solution 2:
This is a quantitative question, based on the clock and time section of the math. This particular question is on clock intervals. There are 3 intervals when the clock strikes 4. Then the time taken for 3 intervals is equivalent to 9 seconds. Hence, the time taken for 1 interval must be 93. That makes it 3 seconds. Thereafter, in order to strike 12, there are supposed to be 11 intervals.
Hence time needed to strike 12 at the same rate is equal to3 multiplied by 11 gives 33 seconds.
Therefore, the required time taken is 33 seconds.
Correct Answer: A
Approach Solution 3:
We can see that there are three clocks that strike four times in the question above.
The 3 intervals therefore add up to 9 seconds. As a result, the time required for one interval is 3 seconds. There are 11 intervals between strikes, and it takes 11 times 3 seconds to strike 12 times. The answer takes 33 seconds to complete. Hence, 33 seconds are needed to complete the task.
Correct Answer: A
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