Many of the students in M. Gamache’s class brought a skateboard or a bicycle to school yesterday. The ratio of the number of skateboards to the number of bicycles was 7 : 4. There were 12 more skateboards than bicycles. How many skateboards and bicycles were there in total?
Answer Choices
A. 44
B. 33
C. 11
D. 22
E. 55