A ratio of white to black cars is 2:7 A ratio of white to red cars is 3:11 There is a total of 343 white red and black cars How. Many black cars are there
Let the number of white cars =W
Let the number of black cars =B
Let the number of red cars =R
W/B =2/7
W/R =3/11
W + B + R =343, solve for W,B, R
W = 42 White cars
B = 147 Black cars
R = 154 Red cars
