Question

Manuel noticed that his cellphone bill reflected a monthly fee of
$40 as well as a charge for $0.05 per minute on the phone.
Manuel lost his August phone bill, but remembers that he paid
$48 total for the month. How many minutes did he spend on the
phone in August? Fill in the blank with a number only.

Answer 1

Answer:

He spent on 16 minutes

Step-by-step explanation:

Given

$Base\ Amount = \ 40$

$Charge = \ 0.5$ per minute

$Total = \ 48$

Required

Determine the number of minutes

Let the number of minutes be n

If 1 minute costs $0.5

n minutes would cost $0.5n

The relationship between the given parameters is

$Total = Base\ Amount + Charges$

Substitute values for each of the above

$48 = 40 + 0.5n$

Solve for 0.5n

$0.5n = 48 - 40$

$0.5n = 8$

Solve for n

$n = 8/0.5$

$n = 16$

He spent on 16 minutes