Question

It takes Joey `1/16` of an hour to write one Thank You card. How many cards can he write in `3/4` of an hour?

Answer 1

Joey can write `{3/4} / {1/16} = 12` cards.

Explanation:

The number of times a number `A` is repeated in other `B` equals dividing `B` by `A`:

`B/A =` number of times `A` is contained into `B`.

Then, if a card needs `1/16` of an hour to be written, in `3/4` of an hour there are:

`{3/4} / {1/16} = 12` periods of time to write a card, then you can write `12` cards.