time and work

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time and work

by anjaligeorge1 » Tue Jun 24, 2008 3:02 am
Q9:
Company S produces two kinds of stereos: basic and deluxe. Of the stereos produced by Company S last month, 3/2 were basic and the rest were deluxe. If it takes 5/7 as many hours to produce a deluxe stereo as it does to produce a basic stereo, then the number of hours it took to
produce the deluxe stereos last month was what fraction of the total number of hours it took to
produce all the stereos?
A. 17/7
B. 31/14
C. 15/7
D. 35/17
E. 2/1
Source: — Problem Solving |

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by atlantic » Tue Jun 24, 2008 3:17 am
Is there a typo in your post? '3/2 were basic and the rest ' Is this correct?

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by sethids » Tue Jun 24, 2008 4:01 am
ya... looks like a problem with the question text.
3/2 takes the ratio of one type grater than 1 which is not possible.