Friday, July 8, 2011

Problem of the day 7/8/11

A shopkeeper has 800 balls of red and blue colors. 480 balls are of blue color. What percentage of the balls are red?

My Answer: D 40%

There where more Blue balls then red and the blue was 60% so i subtracted 480 from 800 and i got 320. 320 wasnt half of 800 so i knew it had to be 40% because blue was 60%. 320/800 x 100= 40%.



800
420= 320     320 divided by 800 = .4

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