Question

For his long distance phone service, joe pays a $3 monthly fee plus 11 cents per minute. Last month, joe's long distance bill was $17.96. For how many minutes was joe billed

Answer 1

136 minutes

Explanation:

The amount that Joe pays is in two parts. He pays a definite amount for the month plus the amount per minute charge.

Thus,

Joe's monthly fee = $3 + $0.11n

where n is the number of minutes.

Joe's bill for the month = $17.96

So that,

$17.96 = $3 + $0.11n

$17.96 - $3 = $0.11

14.96 = $0.11n

n =
`(14.96)/(0.11)`

= 136

The number of minutes that Joe was billed is 136.

In this case, Joe was billed for 136 minutes for the month.