Question

3 batteries cost $5r and 8 folders cost $2r. Jason bought6 batteries and 4 folders. How much does he pay?Give your answer in terms of the

Answer 1

We are asked to determine the total amount paid for 6 batteries and 4 folders. To do that we need to determine the unit price of each item. We do that by dividing the amount spent by the number of items that were bought. That is:

`\begin{gathered} n_b=\frac{5\text{ dollars}}{3\text{ batteries}} \\ \\ n_f=\frac{2\text{ dollars}}{8\text{ folders}} \end{gathered}`

Now we multiply the desired number of items by each of the corresponding unit prices:

`N=(5)/(3)*6+(2)/(8)*4`

Solving the operations:

`\begin{gathered} N=10+1 \\ N=11 \end{gathered}`

Therefore, the total amount paid is $11.