It costs $3 for the first 30 minutes to make a collect call. After the first 30 minutes it costs $5 per hour. If a certain customer make a collect call lasting for 4 hours and 30 minutes, how much will it cost her?  Choose the correct choice from the following answers:
A) $23 B) $25 C) $80 D) $15 E) $12
4 hrs 30 min = 270 min   First 30 min ------&gt; $3   Time left is 240 min...   Now, 60 min costs $ 5   1 min costs $ 5/60   240 min costs $  5/60*240= 
<gadget id="calculator"> 5/60*240</gadget>
<output>20</output>
$ 20   So, Total cost will be $20 + $3 = $ 23   The answer will be ($23) $2320 +  3= 
<gadget id="calculator">20 +  3</gadget>
<output>23</output>
$ 23   The answer will be ($23) $23
<result>A</result>
It costs $3 for the first 30 minutes to make a collect call. After the first 30 minutes it costs $5 per hour. If a certain customer make a collect call lasting for 4 hours and 30 minutes, how much will it cost her?