Question

Your phone plan charges you initial fee and then a certain amount depending on the amount of data you use they send you periodic updates of your usage and your current bill cost after using 3gb of data you owe $30after 5Gbof data you owe $40 what is the cost per gun of data

Answer 1

Answer: Cost per gb of data = y = $5.

Step-by-step explanation:

Let the initial fee be 'x'.

Let the fees depending on the amount of data he use be 'y'.

After using 3 GB of data , he owes $30.

After using 5 GB of data , he owes $40.

According to question, our equations would be

$x+3y=\ 30--------(1)\\\\x+5y=\ 40------(2)$

So, Using elimination method , we get that

$x+3y=\ 30\\\\x+5y=\ 40\\\\----------------------------------------\\\\-2y=-10\\\\y=\dfrac{10}{2}\\\\y=\ 5$

Hence, Cost per gb of data = y = $5.

Answer 2

The cost per data would be 10 dollors