Question

A cell phone company monthly fee fee charges a plus $0.25 for each text message. The monthly fee is $30.00 and you owe $59.50. How many text messages did you have?

Answer 1

You had `118` text messages.

Explanation:

The formula need to solve this problem is `c = 30 + 0,25t` where `c` is the total cost and `t` is the number of text messages. Because we know the total cost, `59.50`, we can substitute this for `c` and solve for `t` while keeping the equation balanced:

`59.50 = 30 + 0.35t`

`59.50 - 30 = 30 + 0.25t - 30`

`29.50 = 0.25t`

`29.50/0.25 = (0.25t)/0.25`

`t = 118`