Solve the problem.
-Shaundra has $4.20 to make a long distance call at a pay phone.The rates listed on the phone for a long distance call are $1.70 for the first three minutes and $0.25 for each additional minute or portion of a minute. Find the
Maximum number of minutes Shaundra can stay on the line.
A) 17 minutes
B) 2 minutes
C) 10 minutes
D) 13 minutes

Question

Quizplus · Accepted Answer

To find the maximum number of minutes Shaundra can stay on the line, we need to determine how many additional minutes she can afford after the first three minutes at $1.70.

Subtracting $1.70 from her total budget of $4.20, we get $2.50 remaining for additional minutes.

Dividing $2.50 by the rate of $0.25 per minute, we find that she can afford 10 additional minutes.

Adding the initial three minutes, the maximum number of minutes Shaundra can stay on the line is 13 minutes.

Therefore, the best choice is D. Shaundra has $4.20, and $1.70 of that can cover the first three minutes of the call, leaving her with $2.50. Each extra minute or portion of a minute costs $0.25. So, she can spend $2.50 on extra minutes.
Dividing $2.50 by $0.25, we get 10, so she can talk for 10 more minutes after the initial three minutes. Therefore, the maximum number of minutes Shaundra can stay on the line is 3 + 10 = 13 minutes. Hence, the correct answer is D) 13 minutes.

Solve the Problem. -Shaundra Has $4.20 to Make a Long Distance Call at Distance