Betty worked for three straight hours on her homework questions. If she solved 120 questions in the third hour, which was five times as many as she solved in the second hour, and six times as many questions as she solved in the first hour, how many questions did she solve in total?
Choose the most appropriate option
A) 156	B) 160	C) 164	D) 168	E) 172
In the first hour, Betty solved   120/6= 
<gadget id="calculator">  120/6</gadget>
<output>20</output>
20 questions.   In the second hour, Betty solved   120/5= 
<gadget id="calculator">  120/5</gadget>
<output>24</output>
24 questions.   In the third hour, Betty solved 120 questions.   The total is  20 + 24 + 120= 
<gadget id="calculator"> 20 + 24 + 120</gadget>
<output>164</output>
164.   The answer is 164.
<result>C</result>
Betty worked for three straight hours on her homework questions. If she solved 120 questions in the third hour, which was five times as many as she solved in the second hour, and six times as many questions as she solved in the first hour, how many questions did she solve in total?