Question

The ratio of students in Jaime's class who have a dog or cat at home to those who don't is 12:8. What percent of the class do NOT have a dog or cat at home?                                PLEASE SHOW ALL WORK!

(A) 33 1/3%
(B) 40%
(C)60%
(D) 66 2/3%

Answer 1

Given:
Ratio of students with dog or cat to students without dog or cat.
12 : 8

12 + 8 = 20

20 is the 100%

12/20 = 0.60 x 100% = 60% with dog or cat

  8/20 = 0.40 x 100% = 40% without dog or cat ANSWER IS B.