The ratio of family cars to the total number of cars on display in Ken's car shop was 4 : 7. ¹₃ of the remaining cars on display were saloon cars and the rest were electric cars and sports cars in the ratio of 5 : 4. If there were 208 more family cars than electric cars, how many sports cars were there?

Family Cars	Saloon Cars	Electric Cars	Sports Cars	Total Cars
4x9	3x9			7x9
	1x9	2x9		3x9
		5x2	4x2
36 u	9 u	10 u	8 u

The total number of electric cars and sports cars is the combined repeated identity. Make the total number of electric cars and sports cars the same. LCM of 2 and 9 is 18.

The total number of saloon cars, electric cars and sports cars is the next combined repeated identity. Make the total number of saloon cars, electric cars and sports cars the same. LCM of 3 and 3 is 27. 

Number of more family cars than electric cars
= 36 u - 10 u
= 26 u

26 u = 208

1 u = 208 ÷ 26 = 8

Number of sports cars
= 8 u
= 8 x 8
= 64

Answer(s): 64