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Question

How will you write 4.17 hours in hours minutes and seconds?

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
4 hours 10 minutes and 12 seconds

Converting 4.17 Hours to Hours, Minutes, and Seconds

To convert 4.17 hours into hours, minutes, and seconds, we break down the decimal part.

Step 1: Identify Whole Hours

The whole number part represents the complete hours. In 4.17 hours, the whole number is 4. So, we have 4 hours.

Step 2: Convert Decimal Hours to Minutes

The decimal part is 0.17 hours. To convert this to minutes, multiply by 60 (since 1 hour = 60 minutes):

$ 0.17 \text{ hours} \times 60 \frac{\text{minutes}}{\text{hour}} = 10.2 \text{ minutes} $

The whole number part of this result is the number of minutes: 10 minutes.

Step 3: Convert Decimal Minutes to Seconds

The remaining decimal part from the minutes calculation is 0.2 minutes. To convert this to seconds, multiply by 60 (since 1 minute = 60 seconds):

$ 0.2 \text{ minutes} \times 60 \frac{\text{seconds}}{\text{minute}} = 12 \text{ seconds} $

This gives us 12 seconds.

Step 4: Combine the Results

Combining the whole hours, minutes, and seconds calculated:

4 hours, 10 minutes, and 12 seconds.

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