Direction: Given here is a pie chart showing the cost of gold in 2010, 2011, 2012 and 2013. Study the chart and answer the following questions.
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The ratio of percentage increases in price of gold from 2011 to 2012 and 2012 to 2013 is
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- 6 : 5
- 7 : 5
- 8 : 5
- 9 : 5
Correct Option: B
As per the given pie chart in question ,
The corresponding angle of year 2012 = 105°
The corresponding angle of year 2011 = 75°
Total Increase = 105° - 75° = 30°
| Percentage increase = |  |  | × 100 | ||
| The corresponding angle of year 2011 |
| Percentage increase in 2012 in comparison to 2011 = | = 40 | 75 |
The corresponding angle of year 2013 = 135°
The corresponding angle of year 2012 = 105°
Total Increase = 135° - 105° = 30°
| Percentage increase = | | | × 100 | ||
| The corresponding angle of year 2012 |
| Percentage increase in 2013 in comparison to 2012 = | = | 105 | 7 |
Required ratio = Percentage increase in 2012 in comparison to 2011 : Percentage increase in 2013 in comparison to 2012
| ∴ Required ratio = 40 : | = 7 : 5 | 7 |
