- There are 319 red, green and blue balls in a bag. 50% of the red balls, 25 of the green balls and 20% of the blue balls are equal in number.
- a) How many blue balls are there in the bag?
- b) How many more blue balls than red balls are there?
- c) What fraction of the balls are green?
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Question
Answer
alfretztay
(a)
50% red = 25 green = 20% blue
25 x (100%/20%) = 125 (blue)
(b)
25 x (100%/50%) = 50 (red)
125 – 50 = 75
(c)
319 – 50 – 125 = 144 (green)
144/319 of the balls are green
Ans : (a) 125 blue balls; (b) 75 more blue balls and (c) 144/319.