Convert to yards and subtract 10%. Easy mental math and much closer. | Hacker News

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		noir_lord on May 23, 2023 \| parent \| context \| favorite \| on: X-59 supersonic aircraft Convert to yards and subtract 10%. Easy mental math and much closer.

OJFord on May 23, 2023 [–]

Or just go straight to 30%? (Take 10% & multiply by 3)

Seems easier to remember the one number than 'divide by 3 for yards then subtract 10% for meters', assuming you have no use for yards. (I use yards colloquially, but never as a measurement.)

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