The following table shows the production of five types of cars by a company for the years 2012 to 2015 . Years → 2012 2013  2014 2015 Total Types cars ↓ D1 7 21 17 6 51 D2 15 11 15 14 55 D3 20 15 12 13 60 D4 5 8 9 25 47 D5 19 15 18 15 67 Total 66 70 71 73 280 Which type of car constituted 30% of all cars produced by the company during 2013 ?

D4 D1 D3 D2

D1

Total number of cars produced in 2013 = 70 30% of total number of cars produced in 2013 = \(\frac{3 }{10}\) × 70 = 21 Car D1 produced 21 cars in year 2013.