# Question: hello my previous question resulted in two linear equations 50x...

###### Question details

Hello, my previous question resulted in two linear equations:

- 50x + 500y = 40 (50GB of data + 500 minutes of talk time = $40)
- 60x + 400y = 42 (60GB of data + 400 minutes of talk time = $42)

Let x be GB of data used and let y be minutes of talk time.

I've solved these by substitution to find the intercept (1/2, 3/100).

The next question is: give the charges for each GB of data and for each minute of calls.

What equation should I use to solve this?

Thanks again!