Question

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?

Answer 1

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:

$10r=64+5$

We can subtract 64 from both sides as:

$10r-64=64-64+5$

$10r-64=5$

Therefore, our required equation is $10r-64=5$ and option 'c' is the correct choice.