The ratio of “D”s to “A”s in the school was 6 to 19. If there were 872 As in the school this term, how many Ds were there?
+36916 6 out of (6+19) , or 6 /25 are A's then the rest (19/25) are D's
6/25 x = 872
x = 872(25/6)
872(25/6) * 19/25 =
19/6 * 872 = ......... D's
