Math CentralQuandaries & Queries


Question from Wonder, a student:

A lecture period (50 min) is close to 1 microcentury.
Find the percentage difference from the approximation?

Hi Wonder.

To solve this problem, you need to find out the number of minutes in a microcentury first.

"Micro" means millionth. So take the number of years in a century, multiply by the number of days in a year (a precise value is 365.2421875) and multiply by the number of hours in a day and the number of minutes in an hour. Then divide this by one million to find the number of minutes in a microcentury.

To find the percentage difference of the estimate (50 min) from the actual (calculated above), you subtract the estimate from the actual, then divide this by the actual.

Stephen La Rocque.

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