Math CentralQuandaries & Queries


Question from Dawn, a student:

Write each rate or ratio as a fraction in lowest terms.

$59.00 for 231 minutes

Hi Dawn.

The fraction would start as 59 / 231. Now you need to find common factors of these numbers so you can reduce it to lowest terms. So what goes into 59? Nothing but 1 and 59, it is a prime number, so
this is in lowest terms already!

But what if you used cents instead of dollars? 5900 / 231 is 59 x 100 which is 59 x 2 x 2 x 5 x 5. So does a 2 or a 5 go into 231? No. So even by using cents we can't reduce the fraction further.

Stephen La Rocque.>

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