Question

Please help, am very confused on how to find the answer

Answer 1

Answer:  49 hours (choice A)

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Explanation:

4:58 PM is 1658 in military time or 24 hour time format.

We add 12 to the hour value to get 4+12 = 16. The minutes stay the same.

Here's a chart converting the given PM time values to their respective corresponding 24 hour time format

$\begin{array}{|c|c|}\cline{1-2}\text{12 hour} & \text{24 hour} \\ \cline{1-2}\text{4:58 PM} & \text{1658} \\ \cline{1-2}\text{5:01 PM} & \text{1701} \\ \cline{1-2}\text{5:32 PM} & \text{1732} \\ \cline{1-2}\text{5:46 PM} & \text{1746} \\ \cline{1-2}\text{4:31 PM} & \text{1631} \\ \cline{1-2}\end{array}$

Margie's time sheet in terms of 24 hour time format would look like this

$\begin{array}{|c|c|}\cline{1-2}\text{Time in} & \text{Time out} \\ \cline{1-2}\text{0705} & \text{1658} \\ \cline{1-2}\text{0730} & \text{1701} \\ \cline{1-2}\text{0801} & \text{1732} \\ \cline{1-2}\text{0722} & \text{1746} \\ \cline{1-2}\text{0655} & \text{1631} \\ \cline{1-2}\end{array}$

To find the duration for any row, we subtract the time out and time in values

• First row: 1658 - 0705 = 0953
• Second row: 1701 - 0730 = 0971
• Third row: 1732 - 0801 = 0931
• Fourth row: 1746 - 0722 = 1024
• Fifth row: 1631-0655 = 0976

A duration like 0953 means she worked 9 hours, 53 minutes for that day.

Then we'll add up those durations

0953+0971+0931+1024+0976 = 4855

She worked 48 hours and 55 minutes in total for this week. This rounds to 49 hours since the "55 minutes" is really close to 60 min = 1 hour.