Challenge #106: How Long were the Lights On?

[François_Rs]

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[Angelica_Obi]

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[oliver_inthavong]

I took the multi-row formula route and it turned out to be more complex compared to the majority. Pretty neat that everyone else completed this with just 2 tools!

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[alexm06]

Here's my answer

[StanleyKinnok_Chan]

here is my solution

[gaoa]

My solution (closest I could get) 🙂:

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[kristiadiuisan]

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[Ed2000]

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[Wanhope]

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[OzlemSigbeku]

Absolutely overcomplicated but solved! Can't be efficient every time.

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