The given Bar Graph presents the data of annual income (A) and annual expenditure (B) of an IT officer in a multinational company during the years 2012 to 2016.
What is the percentage of his total savings with reference to his total income for the period 2012-15 ?
 Savings = Income - Expenditure
For the year 2012, Savings = 6 - 5 = 1
Similarly we will calculate the values for the rest of years and get as
Total savings = 1+1.5+2+1.5=6
Total income = 6+7+8+9=30
Required percentage = $$\frac{6}{30}\times100$$=20 %
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