If the total production of cars during a certain period

Direction: Study the following pie-chart and answer given below:

If the total production of cars during a certain period was 42000, how many more blue cars were sold in comparison to golden cars.

Required difference = ( blue car % - golden car % )x420000/100
Required difference = (12 -10)/100 x 420000 = 2/100 x 420000 = 8400