3 years ago

Joanne buys a rug with an areas of 35/4 square meters. The length of the rug is 7/2 meters, What is the width , in meters, of th

e rug?

1 answer:

6 0

$\bf \textit{area of a rectangle}\\\\
A=l\cdot w\quad 
\begin{cases}
l=length\\
w=width\\
-----\\
A=\frac{35}{4}\\\\
l=\frac{7}{2}
\end{cases}\implies \cfrac{35}{4}=\cfrac{7}{2}w\implies \cfrac{\quad \frac{35}{4}\quad }{\frac{7}{2}}=w
\\\\\\
\cfrac{35}{4}\cdot \cfrac{2}{7}=w\implies \cfrac{35}{14}=w\implies 2\frac{7}{14}=w$

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Mia bought 10 boxes of brownies at the store for a total of $64. The tax on the purchase was $5. What was the cost of each box?

Pavel [41]

Let r represent cost of each box.

We have been given that Mia bought 10 boxes of brownies. So cost of 10 boxes would be $10r$ .

We have been given that Mia bought 10 boxes of brownies at the store for a total of $64. The tax on the purchase was $5. So the total cost of 10 boxes would be cost of 10 boxes plus tax.

We can represent this information in an equation as:

$10r=64+5$