Time for another Excel formula / Power Query challenge. This is based on a common business data analysis problem. Say you have two tables – calls log and office hours. Call log tells when each call is received. Office hours tell us working hours for seven days of the week. We want to know how many calls are outside office hours.

Count calls outside business hours – problem
So you are up for the challenge eh? Just follow the below steps.
- Download the problem data set.
- There are two tables. calls & working.hours.
You have three problems to solve.
- Write a formula in calls table to identify if a call is outside office hours. Can be Yes/No or TRUE/FALSE
- Write a single formula outside the tables to count how many calls were made outside office hours. The answer should be 693. You can use helper columns (or the column in problem#1) if you want.
- Set up a Power Query to filter all outside office hours calls.
Successful in finding the answers? Please post them in comments.
If you have an answer, please post your formulas / VBA / M / spells in the comments area.
Want some clues? Try these – BETWEEN formula in Excel, Range lookup, Working hours problem
Of course there is a hidden answers worksheet in the download. So check that out if you feel stumped.
Want more problems?
Check out Excel homework and Excel challenges pages for some hard, interesting and fascinating problems to solve.
All the best. I am waiting for your answers.

















6 Responses to “A quick personal update”
Thank you for the personal update. It was quite encouraging and a breath of fresh air in my Inbox. Take care and stay safe.
David
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If feel sore throat do above immediate as virus is there 3-4 days before descends into lungs
Would love help with my database mgt in excel.
Thanks for being thoughtful of us.
BTW How do you track your expenses/income in excel? Can you share the worksheet please.
Stay safe you and your family, best wishes.
Thanks for the update and happy to know that you and family are doing good. A 21 day lockdown has now been announced in India (I live around Kolkata) so it's uncertain times ahead. I check up on your wonderful articles often and will do so even more regularly now. Stay safe and God bless.
Hi from Argentina, I follow you for a lot of years now. We here are in a quarantine for 2 or 3 weeks, because the pandemia.
Excel is also my passion and I came here looking for a Num2Words formula, but in spanish. If anyone have it, please let me know.
Best regards.
Pablo Molina
La Rioja - Argentina
I'm glad to have your personal update. I'm from India & following you for so many years. Cheers to have any further personal update.