Question

Melissa purchased a prepaid phone card for $15. Long-distance calls cost 17 cents a minute using this card. Melissa used her card only once to make a long-distance call. If the remaining credit on her card is $8.88, how many minutes did her call last?

Answer 1

To find the number of minutes of Melissa's long-distance call, we can set up an equation. By solving the equation, we find that her call lasted approximately 0.36 minutes.

Step-by-step explanation:

To solve this problem, we can set up an equation using the given information. Melissa started with $15 on her prepaid phone card and ended with $8.88 remaining. She made a long-distance call and the cost per minute is 17 cents. Let's denote the number of minutes of the call as 'x'.

The equation we can set up is:

$15 - 17x = $8.88

We can solve this equation to find the value of 'x', which represents the number of minutes of the call.

Starting with $15, subtracting the cost per minute multiplied by the number of minutes gives us $8.88.

$15 - 17x = $8.88

Now, let's solve for 'x':

$15 - $8.88 = 17x

$6.12 = 17x

x = $6.12 / 17

x ≈ 0.36 minutes

Therefore, Melissa's call lasted approximately 0.36 minutes.