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Question 72
The following bar graph shows the monthly incomes (in thousand rupees) of Aman, Suman and Jyoti in six consecutive years.
What was the difference between the average monthly income of Jyoti over all the six years taken together and Aman's monthly income in the year 2006?
Solution
difference between the average monthly income of Jyoti over all the six years taken together and Aman's monthly income in the year 2006 = $$\frac{\left(9000+11000+18000+27000+26000+35000\right)}{6}-18000$$
= $$\frac{\left(126000\right)}{6}-18000$$
= 21000-18000
= 3000
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