• StabbingSky@lemmy.zip
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    2 days ago

    Napkin math disclaimer

    Cost of Iran war so far: $43.6b

    Number of people in the US with drivers license: 242.1m

    Average EV cost: $55k

    Number of households: 133m

    Average rooftop solar cost: $22.5k

    Cost to give everyone EVs: 242.1m × $55k = $13.3b

    Cost to give every household rooftop solar: 133m × $22.5k = $3b

    Total cost: $16.3b

    We’d have enough to do it almost 3 times.

      • StabbingSky@lemmy.zip
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        2 days ago

        Nah, I messed up looking at the answer, not with the math.

        Edit: it’s wild that I was downvoted for admitting my mistake.

        • wicked@programming.dev
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          2 days ago

          Nah, I messed up looking at the answer, not with the math.

          You messed up the math, so how is this admitting your mistake?

          • StabbingSky@lemmy.zip
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            2 days ago

            No, I didn’t. The math was fine, it was me not counting the places in the answer correctly that was the problem.

              • StabbingSky@lemmy.zip
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                1 day ago

                No, it’s not. The numbers used to derive the answer were correct. I did not forget to multiply by the K. I read the answer wrong when I transferred it.

                My math was correct, my reading wasn’t.

                • wicked@programming.dev
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                  1 day ago

                  Cost to give every household rooftop solar: 133m × $22.5k = $3b

                  Should be “133m × $22.5k = $3000b”… or 3 trillion. You don’t think the right side of the equation is part of the math?