It costs $2 for the first 15 minutes to use the bumper cars at a fair ground. After the first 15 minutes it costs $6 per hour. If a certain customer uses the bumper cars for 3 hours and 25 minutes, how much will it cost him?
Choose one: A) $22 B) $3 C) $15 D) $21 E) $30
3 hrs 25 min = 205 min   First 15 min ------&gt; $2   Time left is 190 min...   Now, 60 min costs $ 6   1 min costs $ 6/60   190 min costs $  6/60*190= 
<gadget id="calculator"> 6/60*190</gadget>
<output>19</output>
&gt; $ 19   So, Total cost will be $19 + $2 =&gt; $ 21   The answer will be ($21) $2119 +  2= 
<gadget id="calculator">19 +  2</gadget>
<output>21</output>
&gt; $ 21   The answer will be ($21) $21
<result>D</result>
It costs $2 for the first 15 minutes to use the bumper cars at a fair ground. After the first 15 minutes it costs $6 per hour. If a certain customer uses the bumper cars for 3 hours and 25 minutes, how much will it cost him?