Question

shellys pet food store sold one customer 5 peanut butter biscuits for $3. she sold another customer 7 beef treats for 4.20$. write a proportion that compares the sales of these two items. and find the cross pruduct the cross products are both equal to ___

Answer 1

We know that

• They sold to one customer 5 peanut butter biscuits for $3.

,

• To another customer, 7 beef treats for $4.20.

Using the given information, we form the following proportion

`(5)/(3)=(7)/(4.20)`

Then, we divide to see if these ratios are equivalent

`1.66\ldots=1.66\ldots`

As you can see they are equal.

The cross product of the proportion would be

`\begin{gathered} 5\cdot4.20=7\cdot3 \\ 21=21 \end{gathered}`

Therefore, the cross product is equal to 21.