Mary works 9 hours per day on Monday, Wednesday and Friday, and 5 hours per day on Tuesday and Thursday. She does not work on Saturday and Sunday. She earns $407 per week. How much does she earn in dollars per hour?	Options.
A) 12 B) 10 C) 9 D) 8 E) 11
So, she works 27 hours in 3 days   So, she works 10 hours in 2 days   So in a week she works 37 hours ( 27 + 10 ) and earns $407   So, Hourly wage is  407/37= 
<gadget id="calculator"> 407/37</gadget>
<output>11</output>
&gt; 11   Hence answer will be (11) 11
<result>E</result>
Mary works 9 hours per day on Monday, Wednesday and Friday, and 5 hours per day on Tuesday and Thursday. She does not work on Saturday and Sunday. She earns $407 per week. How much does she earn in dollars per hour?