SSAT Math Question 252: Answer and Explanation
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Question: 252
6. Which of the following gives the number of seconds in m minutes, h hours, and 2 seconds?
- A. 60m + 360h + 2
- B. 60m + 3,600h + 2
- C. m + 60h + 2
- D.
Correct Answer: B
Explanation:
The answer is B
As there are 60 seconds in 1 minute, there are 60m seconds in m minutes. As there are 3,600 seconds in 1 hour (60 minutes, each 60 seconds), there are 3,600h seconds in h hours. Add these to 2 seconds for the result.
Plug in for m and h, such as m = 2 and h = 3. As there are 60 seconds in one minute, there are 120 seconds in 2 minutes. As there are 3,600 seconds in one hour (60 minutes, each 60 seconds), there are 10,800 seconds in 3 hours. Add these to the 2 seconds to get 10,922 seconds. Only choice (B) matches these results when the selected numbers are tested.