How many hours did Johnny work? [Excel Homework]

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Story of Johnny, Hard working atom splitter:

Meet Johnny, who lives by the intersection of lane 2345, and BAG street. Johnny (or little Jon as friends call him) is a hard working family guy. He works at local nuclear power plant in a neighborhood named Sheet3. Due to a recent re-organization at work place, Jon found himself reporting to an almost crazy boss named “Bill Lumbergh”.

Lumbergh asking Johnny to split atoms manully before its too late.. or else...,Now, Lumbergh is not your everyday crazy boss, he is so much more than that. So, one day Lumbergh walks over to Jon’s desk and tells him, “Look Jon, we are having issues in the particle accelerator in the basement. It doesn’t seem to split atoms alright. So I need you to go there and split atoms manually. We got 12,789,000 atoms to be split before next weekend. So I am gonna go ahead and ask you to work on it. Ummkay?

Just when Johnny thought of uttering a curse, Lumbergh came back and reminded, “Oh Johnny, remember to log how much time you are spending splitting atoms. I need you to tell me how many hours you worked for every million atoms. Make sure you follow the latest Timesheet report formats, or else…,

Johnny muttered a couple of real ugly cuss words that are not blog worthy and went about his business of splitting atoms. He managed split only 11 million of them before the deadline given by Lumbergh. Those darned atoms!

Also, Johnny logged the time he spent for every million atoms using, well, excel. Like this:

Data - Start and End times for each task - Calculating working hours between 2 given dates

(Download the data)

Your homework:

Johnny needs your help to figure out how many hours he worked in total (as well as for each million). He is already tired hunting a missing electron in the basement alleys. So don’t tell him to count manually. He wants to have an excel formula that tells him how many hours he worked given a start and end date in cells A1 and A2 respectively. Remember,

  • Johnny never works after 6pm or before 9am
  • Johnny never works on weekends.
  • Lets say Johnny doesnt take any lunch breaks (he has developed a taste for those higgs bosons sandwich with positron milk shake).

So I am gonna go ahead and ask you to complete this homework before the weekend. When you got the correct formula, come back here and post it in comments. Ummkay?

More excel homework:

PS: If you feel lost, that is because you have not seen office space. Go watch it.
PPS: if you still feel lost, that is because you do not know NETWORKDAYS. Go learn it.

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11 Responses

  1. Ciao Hui,
    Collecting Excel tricks under the title “Notable Excel Websites (Non-MVP) Edition” is a brilliant idea…
    Thank you in the name of all The FrankensTeam.
    On our site there is a box with a picture and text highlighting:

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    we think ourselves “bad boys” a bit 🙂
    For those who would like to know why our site is a no-MVP site, enough to click on the link:
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    Thank you again!

  2. I really enjoyed this (newsletter). I must admit that I rarely read an Excel newsletter (and I subscribe to quite a few) all the way though, but this grabbed my attention and before I realized it, I was engrossed in it. I must also admit that most of this I don’t understand, yet. But, it excites me when I do learn something new in Excel. I can’t wait to see how much of this I can implement into my (constantly-evolving) ‘House Budget’ & ‘Family Medical’ worksheets that I have developed over the past few years! I sure hope to see more of these type of newsletters in the future! Thanks!

  3. Hui, This post is Superb! More over I have always been a fan of Roberto’s work and have learnt a lot from him.

    Here are some of my recent contributions

    1. Customising markers in a chart – http://www.goodly.co.in/customize-markers-in-a-chart/
    2. Charting Hacks to work faster – http://www.goodly.co.in/5-charting-hacks-to-help-you-work-faster/
    3. 7 Date formulas to make life easy – http://www.goodly.co.in/date-formulas-in-excel/
    4. Customised scrollbar using VBA – http://www.goodly.co.in/customized-scroll-bar-in-excel/
    5. Adding Direct Legends – http://www.goodly.co.in/customized-scroll-bar-in-excel/

    Hope everyone enjoys!

  4. I like the Excel Ninja Menus.
    1. Select a cell or range then move till the 4-way cross appears. Right-Click and drag the selection to another place in the worksheet then, like a ninja, a menu full of skills and throwing stars pops up allowing me to do all kinds of awesomeness.
    2. When you click the fill box on a Date and right click and drag it down, a lot of amazing Date options pop up.
    I also brand my Excel to remind myself that I’m awesome. In my personal macro workbook I place the following code.
    Private Sub Workbook_Open()
    Application.Caption = “SuperKrishna’s Awesomeness”
    End Sub

  5. My favorite tip goes along with #17. If you try to copy subtotaled data (and in earlier Excel versions filtered data),when you paste it all the data displays instead of just the summarized data.
    To get around this, select your summarized data, click on Find and Select tab and then select Go to Special. Click Visible cells Only and click OK. Now paste and you will see that only the summarized data has been copied.
    You can also go CTRL+G and then click the Special icon at the bottom of the dialog box.

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