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Study the following graphs to answer these questions.
Pie-charts below show the percentage of different types of vehicles A, B, C, D, E and F in state in two consecutive years (2015 and 2016).
In the year 2015, the number of vehicles of type A and D together is what per cent of the number of vehicles type F and A together in 2016?
In the year 2015, there were a total of 142,980 vehicles, the number of vehicles of type A and D is 20% and 15% of the total.
Together, it will be 15+20 = 35% of 142,980 = $$\ \frac{\ 35}{100}\times\ 142,980\ =50,043$$
In 2016, F & A together will be 39% of the total ( 18% and 21%)
This will be = $$\ \frac{\ 39}{100}\times\ 186,400\ =72,696$$
Now, the number of vehicles of type A and D together as a percentage of the number of vehicles type F and A together in 2016 will be:
$$\ \frac{\ 50,043}{72,696}\times\ 100\ =68.83\%$$
