Question

Dan pays a monthly fee of $11 for his phone service and an additional $0.06 per minute of use. The least he has been charged in a month is $77.66. What are the possible numbers of minutes he has used his phone in a month?

(A) 1111 or more
(B) Less than 1111
(C) Between 1000 and 1111
(D) Between 776 and 1111

Answer 1

After subtracting the monthly fee from the total charge and dividing by the cost per minute, we find that Dan used 1111 minutes or more when he was charged at least $77.66.

Step-by-step explanation:

To determine the possible number of minutes Dan has used his phone in a month, given that the least he has been charged is $77.66, we first need to account for the monthly fee. Subtract the monthly fee of $11 from the total charge:

$77.66 - $11 = $66.66

Now, we divide the remaining amount by the cost per minute to find the number of minutes:

$66.66 ÷ $0.06/minute = 1111 minutes

Therefore, since the total charge of $77.66 is the least he has been charged, the possible number of minutes he has used is 1111 or more, which corresponds to option (A).