It costs $5 for the first 1/3 hour to use the laundry machine at the Laundromat. After the first ¼ hour it costs $12 per hour. If a certain customer uses the laundry machine for 2 hours and 30 minutes, how much will it cost him?	Choose the correct option.
A) $27.	B) $29.	C) $31.	D) $33.	E) $35.
2 hrs 30 min = 150 min   First 20 min ------&gt; $5   Time left is 130 min...   Now, 60 min costs $ 12   1 min costs $ 12/60   150 min costs $  12/60*130= 
<gadget id="calculator"> 12/60*130</gadget>
<output>26</output>
&gt; $ 26.00   So, Total cost will be $26 + $5 =&gt; $ 31   Hence answer will be $31.26 +  5= 
<gadget id="calculator">26 +  5</gadget>
<output>31</output>
&gt; $ 31   Hence answer will be $31.
<result>C</result>
It costs $5 for the first 1/3 hour to use the laundry machine at the Laundromat. After the first ¼ hour it costs $12 per hour. If a certain customer uses the laundry machine for 2 hours and 30 minutes, how much will it cost him?