ColorLight : Dark Red 3 : 4 Blue 5 : 3 Green 1 : 3 Pink 1 : 7 Yellow 9 : 5 Orange 7 : 9 In a box, there are several balls. The pie-chart shows the percentage-wise distribution of 6 different colours…
Question and options
| Color | Light : Dark |
|---|---|
| Red | 3 : 4 |
| Blue | 5 : 3 |
| Green | 1 : 3 |
| Pink | 1 : 7 |
| Yellow | 9 : 5 |
| Orange | 7 : 9 |
In a box, there are several balls. The pie-chart shows the percentage-wise distribution of 6 different colours of balls; and total number of balls = 1000. Also, the ratio of the light and dark shades of the six colours of balls is given.
How many dark red balls are there in the box?
- 110
- 120
- 130
- 140
Answer and explanation
Correct answer: B - 120
The chart puts red at 21% of 1000 balls, which is 210. Red's light to dark ratio is 3 : 4, so dark red = 4/7 x 210 = 120. A count of 90 would be light red, using the wrong part of the ratio.
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