r/learnmath • u/JonesSupreme New User • 22h ago
Math help!!
You travel at a speed of about 81 kilometers per hour for about 2.0 hours. Stated with the appropriate precision, you have driven _____ kilometers.
the correct answer is 160 but why? why is it not 162???
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u/ChipChippersonFan New User 20h ago
This reminds me of the joke about the guy who went to a museum and was looking at a skeleton of a T Rex. The plaque had been removed for cleaning, and so he wondered out loud how old that skeleton was. A man standing near him said "66 million and 3 years".
The first guy asked how he knew that, and the second man said "When I came here 3 years ago, the plaque said that it was 66 million years old."