Question

Oliver is buying a deck of cards for each of his eight nieces and nephews. Let d equal the price of onedeck of cards. If he wants to spend less than thirty dollars, how much could each deck of cards cost?

Answer 1

Given that Oliver want to buy a deck of cards for each of his eight neices and nephews;

and each deck of cards cost d.

the total costis;

`8* d=8d`

If he wants to spend less than thirty dollars, it means;

`8d<30`

to get the value of d, let's divide both sides by 8;

`\begin{gathered} (8d)/(8)<(30)/(8) \\ d<3.75\text{ dollars} \end{gathered}`

The cost of each deck could be any amount less than $3.75

`d<\text{ \$}3.75`