Company S produces two kinds of radios: basic and deluxe. Of the radios produced by Company S last month, 2/3 were basic and the rest were deluxe. If it takes 7/5 as many hours to produce a deluxe radio as it does to produce a basic radio, then the number of hours it took to produce the deluxe radio last month was what fraction of the total number of hours it took to produce all the radios?
Choose the correct choice from the following answers.
A) 7/17	B) 2/3	C) 8/17	D) 6/17	E) 3/4
No of basic radios was 2/3 of total and # of deluxe radios was 1/3 of total, let's assume total=12, then Basic=8 and Deluxe=4.   Now, if time needed to produce one Deluxe rdio is 1 unit than time needed to produce one Basic radio would be 7/5 units. Total time for Basic would be  8*1= 
<gadget id="calculator"> 8*1</gadget>
<output>8</output>
8 and total time for Deluxe would be 4*7/5=28/5 --&gt; total time for both of them would be 8+28/5 --&gt;68/5 deluxe/total=28/5 / 68/5 = 28/68 =7/17   7/17nswer: 7/17.
<result>A</result>
Company S produces two kinds of radios: basic and deluxe. Of the radios produced by Company S last month, 2/3 were basic and the rest were deluxe. If it takes 7/5 as many hours to produce a deluxe radio as it does to produce a basic radio, then the number of hours it took to produce the deluxe radio last month was what fraction of the total number of hours it took to produce all the radios?