Study pie-chart and table carefully and answer the question that follows:
Number of cars = 700
The second chart shows the ratio of petro and diesel cars.
What is the difference between the number of diesel engine cars in state-2 and the number of petrol engine cars in state-4?
Number of cars in state 2 = 700*0.28 = 196
Number of diesel engines in state 2 =$$\frac{5}{5+9}*700$$ = 70
Number of cars in state 4 = 700*$$\frac{26}{100} = 182$$
Number of petrol cars in state 4 = 182/2 = 91
Difference = 91-70 = 21
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