There are 21 sedans and 12 utilitys on the lot..if the ratio stays the same how many sedans are on the lot of 99 vehicles

Answer 1

21:12 = 7:4

= 7x:4x where 7x+4x= 99.

11x=99,

x =99/11 = 9

sedans are 7x =7(9) = 63

utilities are 4x = 4(9) = 36

63 + 36 = 99 total vehicles