During a single footrace, 6 of the 14 competitors held the lead for some period of time. If 4 of the leaders wore black shoes and 9 people wore white shoes, how many of the people who never lead wore white shoes if everyone wore either black or white shoes?
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dendude
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I get 7 as well.
Total Competitors : 9 with white shoes and (14-9) = 5 with black shoes
Among Leaders: 4 with black shoes, implies 2 with white shoes
Therefore among the non-leaders were, (5-4)=1 with black shoes and (9-2)=7 with white shoes.
Total Competitors : 9 with white shoes and (14-9) = 5 with black shoes
Among Leaders: 4 with black shoes, implies 2 with white shoes
Therefore among the non-leaders were, (5-4)=1 with black shoes and (9-2)=7 with white shoes.
