Question

Mr. Colby needs 22 chargers for a classroom computer cart. The cost per charger is constant. The table below shows the cost of different numbers of chargers at an electronics store.5 chargers cost $34.75.8 Chargers cost $55.60.15 chargers $104.25.

Answer 1

If the cost per charger is constant, let's find the price of each charger by dividing the total cost by the number of chargers in the three cases given:

`\begin{gathered} \text{price}=(34.75)/(5)=6.95 \\ \text{price}=(55.6)/(8)=6.95 \\ \text{price}=(104.25)/(15)=6.95 \end{gathered}`

So the price of one charger is $6.95. Now, to find the price of 22 chargers, we just need to multiply the price of one charger by the number of chargers:

`22\cdot6.95=152.9`

So the price of 22 chargers is $152.90