If there are thrice as many women as men in a group and an equal number of men and women do not own cars - a group that is 30% of the total. What fraction of the total is men who own cars? Pick one.
A) 3⁄20 B) 11⁄60 C) 9⁄40 D) 1⁄10 E) 11⁄20
Consider a group of 100 men and 300 women, a total of 400 people. 30% of them, which is 120, form a group of people who don't own a car.   Half of them are men, and the other half are women, more precisely 60.   It means that there are 100 - 60= 
<gadget id="calculator">100 - 60</gadget>
<output>40</output>
40 men who own a car, and this represents 40/400= 1/10 of the total.   Answer 1⁄10
<result>D</result>
If there are thrice as many women as men in a group and an equal number of men and women do not own cars - a group that is 30% of the total. What fraction of the total is men who own cars?