Carter has 60 balloons. 4/12 of the balloons are black, and 3/12 of the balloons are white. The rest of the balloons are red. Which series of calculations shows how many red balloons Carter has? A. 12/12 = 3 * 4/12 ; 1/12 *60 = 5;4 * 5 = 20. red balloons
B . 4/12 + 3/12 = 7/12 ; 1/12 * 60 = 5 ; 7 * 5 = 35 red balloons
C. 12/12 - 4/12 - 3/12 = 5/12 ; 1/12 * 60 = 6;6 *5 = 30 balloons
D. 4/12 + 3/12 = 7/12 ; 12/12 - 7/12 = 5/12 ; 1/12 * 60 = 5 ; 5 * 5= 25 red balloons