arti Posted May 2, 2002 Share Posted May 2, 2002 This is a question from Barrons. In Motor City 90% of the population own a car. 15% own a motorcycle, and everybody owns one or the other or both. What is the percentage of motorcycle owners who own cars? A. 5% B 15% C 33 1/3 % D 50% E 90% ANSWER C The solution of the prob goes like this........ You want to know the ratio of the percentage who own both a car and a motorcycle to the percentage who own a motorcycle. Now the calculation is : % with both car and motorcycle = 5% % motorcycle = 15% now 5/15 = 1/3 = 33 1/3 % Hence C is the answer. What i want to ask is........Here we are supposed to find the percentage of motorcycle owners who own cars i.e. %age of people with both car & motorcycle. No ratios are asked. But it is calculated in the answer. According to me the answer should be A. pls. help. Arti Arti Gupta Quote Link to comment Share on other sites More sharing options...
a user Posted May 3, 2002 Share Posted May 3, 2002 The solution of the prob goes like this........ You want to know the ratio of the percentage who own both a car and a motorcycle to the percentage who own a motorcycle. Now the calculation is : % with both car and motorcycle = 5% % motorcycle = 15% now 5/15 = 1/3 = 33 1/3 % Hence C is the answer. What i want to ask is........Here we are supposed to find the percentage of motorcycle owners who own cars i.e. %age of people with both car & motorcycle. No ratios are asked. But it is calculated in the answer. Hi, Arti In the question, it asked What is the percentage of motorcycle owners who own cars?. In other words how many motorcycle/car owners out of all motorcycle owners, and the ratio is 5%/15% = 33.3% HTH Lee Shi Quote Link to comment Share on other sites More sharing options...
arti Posted May 3, 2002 Author Share Posted May 3, 2002 ok ok ok.........i got it. thanks a million Lee. :) Arti Gupta Quote Link to comment Share on other sites More sharing options...
isha Posted May 29, 2002 Share Posted May 29, 2002 In Motor City 90% of the population own a car. 15% own a motorcycle, and everybody owns one or the other or both. What is the percentage of motorcycle owners who own cars? A. 5% B 15% C 33 1/3 % D 50% E 90% ANSWER C Arti How did you calculate that % with both car and motorcycle = 5%. Quote Link to comment Share on other sites More sharing options...
isha Posted May 29, 2002 Share Posted May 29, 2002 In Motor City 90% of the population own a car. 15% own a motorcycle, and everybody owns one or the other or both. What is the percentage of motorcycle owners who own cars? A. 5% B 15% C 33 1/3 % D 50% E 90% ANSWER C Arti How did you calculate that % with both car and motorcycle = 5%. Quote Link to comment Share on other sites More sharing options...
raghuveer_v Posted May 30, 2002 Share Posted May 30, 2002 Hi Isha, Hope my explanation helps ... %people who own cars = 90% (say, set A) %people who own bikes = 15% (say, set B) %people who own either a car or a bike = 100% (A Union B) (since, every person has either a car or bike or both) %people who own a car and a bike = A intersection B = (A + B) - (A Union B) = 90% + 15% - 100% = 5% Drawing a Venn Diagram might help you visualize it better. Raghuveer. Quote Link to comment Share on other sites More sharing options...
isha Posted May 30, 2002 Share Posted May 30, 2002 thanks a lot raghuveer. I got it. Quote Link to comment Share on other sites More sharing options...
asdada1 Posted January 23, 2007 Share Posted January 23, 2007 c it is Quote Link to comment Share on other sites More sharing options...
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