Question

A bookcase has 5 of these bookshelves that are 42 inches long. How many FEET of shelf space is there? Explain your reasoning. (If the answer is given in inches you can only get a 4 out of 6 maximum. How many FEET of shelf space is the answer you explain.) *

Answer 1

Answer:

$17.5\ \text{feet}$

Step-by-step explanation:

A bookcase has 5 bookshelves. Each bookshelf is 42 inches long.

Total bookshelf length in the book case = $5\times 42=210\ \text{inches}$

$1\ \text{feet}=12\ \text{inches}\\\Rightarrow 1\ \text{inch}=\dfrac{1}{12}\ \text{feet}$

$210\ \text{feet}=210\times \dfrac{1}{12}=17.5\ \text{feet}$

The bookcase has a total shelf space of $17.5\ \text{feet}$.

*One bookshelf has a space of $\dfrac{42}{12}=3.5\ \text{feet}$.