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?

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Answer 1 · 2016-10-20T21:15:51

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

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.

It takes Joey 1/161/16 of an hour to write one Thank You card. How many cards can he write in 3/43/4 of an hour?